Stack-based Buffer Overflow
A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold.
How It Works
A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold. The stack stores local variables, function parameters, and critical control information including the return address that tells the CPU where to resume execution after a function completes. When an attacker overflows a buffer, they can overwrite adjacent memory, including this return address.
The classic exploitation path involves carefully crafting input to overwrite the return address with a pointer to attacker-controlled code. Historically, attackers would inject shellcode directly into the overflowed buffer, then redirect execution to it. Modern defenses like Data Execution Prevention (DEP/NX) mark the stack as non-executable, forcing attackers to use Return-Oriented Programming (ROP) instead—chaining together existing code snippets ("gadgets") to perform malicious operations without injecting new code.
Address Space Layout Randomization (ASLR) randomizes memory addresses to make exploitation harder, but attackers can defeat it through information disclosure vulnerabilities that leak memory addresses. Stack canaries—random values placed between buffers and control data—can detect overwrites, but may be bypassed through brute-force attacks or by carefully avoiding them in partial overwrites.
Impact
- Arbitrary code execution at the privilege level of the vulnerable process
- Complete system compromise if the vulnerable process runs with elevated privileges (root/SYSTEM)
- Memory corruption leading to crashes and denial of service
- Bypass of authentication mechanisms by redirecting execution flow around security checks
- Data theft or modification through code injection that accesses sensitive memory regions
Real-World Examples
The Morris Worm (1988) exploited a stack overflow in the Unix fingerd daemon, becoming one of the first major internet worms. The Code Red worm (2001) leveraged a stack overflow in Microsoft IIS (CVE-2001-0500) to compromise hundreds of thousands of web servers, demonstrating the massive scale of automated exploitation.
More recently, EternalBlue exploited stack corruption in Windows SMB (CVE-2017-0144), enabling the WannaCry and NotPetya ransomware outbreaks that caused billions in damage. The Heartbleed bug (CVE-2014-0160), while technically a heap-based read overflow, demonstrated how buffer handling errors remain prevalent even in security-critical software like OpenSSL.
Mitigation
- Stack canaries (compile with
-fstack-protector-allor equivalent) to detect overwrites before return - Address Space Layout Randomization (ASLR) to randomize memory locations
- DEP/NX bit enforcement to prevent code execution from stack memory
- Memory-safe string functions (use
strncpy,snprintf,strlcpyinstead ofstrcpy,sprintf,gets) - Compiler hardening flags (
-D_FORTIFY_SOURCE=2, control-flow integrity) - Input validation with strict bounds checking on all externally-supplied data
- Memory-safe languages (Rust, Go) for new development to eliminate the vulnerability class entirely
Recent CVEs (770)
CryptX versions before 0.088_001 for Perl have a stack buffer overflow in four AEAD decrypt_verify helpers. The gcm_decrypt_verify, ccm_decrypt_verify, chacha20poly1305_decrypt_verify and eax_decrypt_verify XS routines copied the caller-supplied authentication tag into a fixed 144-byte stack buffer (MAXBLOCKSIZE) without checking the supplied length. A longer tag overwrites the stack past the buffer. Version 0.088 added the clamp to gcm_decrypt_verify, and 0.088_001 added it to the other three. Any caller of an affected helper that forwards an attacker-controlled tag longer than the buffer can trigger the overflow.
Remote code execution in Gladinet Triofox is possible through a stack-based buffer overflow in WOSDefaultHttpModule.dll, which fails to bounds-check overly long URL paths beginning with /woshome. Because the flaw is reachable over the network with no authentication and no user interaction (CVSS 9.8), an attacker who can reach the Triofox web service can corrupt the stack and potentially execute arbitrary code in the context of the web module. No public exploit has been identified at the time of analysis, and the issue was reported by Tenable (TRA-2026-45).
Remote code execution in Gladinet Triofox is possible through a stack-based buffer overflow in the WOSDeviceDropFolder.dll component, which mishandles overly long URL paths that begin with /resources. The CVSS 9.8 vector indicates an unauthenticated, network-reachable flaw requiring no user interaction, meaning any attacker who can reach the Triofox web service can corrupt the stack and potentially execute arbitrary code. The issue was reported by Tenable (TRA-2026-45); no public exploit identified at time of analysis and no EPSS score was provided in the source data.
Arbitrary code execution in IBM Aspera High-Speed Transfer Server and Endpoint (versions 3.7.4 through 4.4.7 Fix Pack 1) arises from a stack-based buffer overflow in the asperahttpd component. An authenticated user with network access can corrupt memory in this HTTP handling component to run code in the context of the service, fully compromising confidentiality, integrity, and availability (CVSS 8.8). No public exploit has been identified at time of analysis, and the CVE is not listed in CISA KEV; EPSS data was not provided.
Remote code execution in Tasmota firmware version 15.3.0.3 and earlier allows remote unauthenticated attackers to trigger a stack-based buffer overflow in the fetch_jpg() function of the xdrv_10_scripter.ino scripting driver. The flaw is exposed over the network with low complexity and no privileges required (CVSS 7.3 AV:N/AC:L/PR:N/UI:N), and a public proof-of-concept repository has been registered, though no public exploit code was identified in the references at time of analysis. EPSS probability is very low (0.05%, 15th percentile) and the issue is not listed in CISA KEV.
Arbitrary code execution in GDAL 3.1.0 through 3.13.0 is reachable through the netCDF driver, where scanForGeometryContainers (frmts/netcdf/netcdfsg.cpp) copies a CF-convention geometry attribute into a fixed-size stack buffer without checking its length. Any service or workflow that feeds attacker-supplied NetCDF files to GDAL can be coerced into overflowing the stack and running attacker code in the process context. No public exploit is identified at time of analysis and EPSS is just 0.01% (3rd percentile), yet the issue carries a CVSS of 7.4 because the outcome is full remote code execution on the host.
Stack-based buffer overflow in Edimax EW-7438RPn WiFi range extender firmware up to version 1.31 enables authenticated remote attackers to execute arbitrary code by sending malicious input to the /goform/mp endpoint in the web server component. Public exploit code exists on GitHub, though the vulnerability is not listed in CISA KEV. The vendor failed to respond to responsible disclosure attempts, leaving devices unpatched.
Stack-based buffer overflow in Edimax EW-7438RPn WiFi range extender firmware up to version 1.31 allows authenticated remote attackers to crash or execute code on the device by sending malicious input to the WPS configuration interface. The vulnerability occurs when processing the pinCode or wlan-url parameters in /goform/formWpsStart, with publicly available exploit code on GitHub demonstrating the attack.
Local privilege escalation in FreeBSD's libcasper(3) library affects FreeBSD 14.3, 14.4, and 15.0 releases prior to specified patch levels, where a missing FD_SETSIZE bounds check enables stack corruption when a low-privileged attacker forces a setuid-root application to allocate file descriptors above 1024. Successful exploitation yields root-equivalent privileges on the local host. No public exploit identified at time of analysis and EPSS scores exploitation probability at just 0.02%, but the issue is confirmed by a FreeBSD security advisory (SA-26:22.libcasper).
The setcred(2) system call is only available to privileged users. However, before the privilege level of the caller is checked, the user-supplied list of supplementary groups is copied into a fixed-size kernel stack buffer without first validating its length. If the supplied list exceeds the capacity of that buffer, a stack buffer overflow occurs. Because the bounds check on the supplementary groups list occurs after the kernel stack buffer has already been written, an unprivileged local user may trigger the overflow without holding any special privilege. Successful exploitation may allow an attacker to execute arbitrary code in the context of the kernel, allowing an unprivileged local user to gain elevated privileges on the affected system.
Stack buffer overflow in Netatalk's desktop.c affects all versions from 1.3 through 4.2.2, allowing a network-reachable low-privilege authenticated attacker to crash the AFP service or potentially execute arbitrary code on the server. The vulnerability is rooted in improper bounds checking within AFP desktop database handling code and carries a CVSS score of 6.0 (Medium) with high availability impact as the most reliably achievable outcome. No public exploit code and no CISA KEV listing have been identified at time of analysis, and the required high attack complexity materially limits real-world exploitation risk.
Stack-based buffer overflow in Netatalk versions 2.0.4 through 4.4.2 allows authenticated remote attackers to corrupt memory via UCS-2 type confusion in the convert_charset() function, leading to high-impact compromise of confidentiality, integrity, and availability. The flaw affects Netatalk, the open-source AppleTalk/AFP file server commonly used to share files with macOS clients, and is fixed in version 4.4.3. No public exploit identified at time of analysis, though the high CVSS of 8.8 and low attack complexity warrant prompt patching.
Stack-based buffer overflow in libsolv's Debian metadata parser allows remote, unauthenticated attackers to cause a denial of service by serving maliciously crafted Debian repository metadata containing SHA384 or SHA512 checksum tags. The root cause, confirmed by the GitHub PR #616 diff, is a statically allocated 65-byte stack buffer in `ext/repo_deb.c` sized only for SHA256 digests, which is overflowed by the larger SHA384 (96 hex chars) and SHA512 (128 hex chars) values. No active exploitation has been confirmed (not in CISA KEV) and no public exploit code has been identified at time of analysis; an upstream fix is available as an open pull request.
Buffer Overflow vulnerability in EPSON L14150 FL27PB allows a remote attacker to execute arbitrary code via the RAW Printing Service (JetDirect) on TCP port 9100
Stack-based buffer overflow in lwIP through 2.2.1 enables remote unauthenticated attackers to corrupt stack memory in the SNMPv3 USM handler by sending a crafted msgAuthenticationParameters field to snmp_parse_inbound_frame in src/apps/snmp/snmp_msg.c. The flaw stems from a commented-out length assertion that allowed user-controlled TLV value lengths to exceed SNMP_V3_MAX_AUTH_PARAM_LENGTH during decoding. No public exploit identified at time of analysis, but the CVSS 4.0 score of 9.3 reflects network-reachable, no-privilege, no-interaction exploitation against a library widely embedded in IoT and embedded TCP/IP stacks.
Stack-based buffer overflow in Investintech SlimPDFReader ≤2.0.13 enables remote code execution when victims open malicious PDF files. The vulnerability exists in the sub_3B4610 function of SlimPDFReader.exe and requires no authentication but depends on user interaction (opening crafted PDF). Public exploit code is available via Fraunhofer SIT, significantly lowering attacker barrier. The vendor has discontinued the product with no remediation planned, leaving users with no official patch and requiring migration to alternative PDF readers.
Stack overflow in Huawei HarmonyOS media platform allows local authenticated users to cause denial of service through a crafted media file that triggers stack memory exhaustion. The vulnerability requires user interaction and authenticated access (CVSS PR:L), limiting its real-world severity despite affecting availability. No public exploit code or active exploitation has been identified at the time of analysis.
Stack buffer overflow in PostgreSQL's refint module allows low-privileged database users to execute arbitrary code as the database operating system user across all supported versions before 14.23, 15.18, 16.14, 17.10, and 18.4. The vulnerability enables two distinct attack paths: direct stack overflow leading to OS-level code execution, and SQL injection when applications expose user-controlled columns configured as refint cascade primary keys. With CVSS 8.8 (AV:N/AC:L/PR:L) and network-based exploitation requiring only low-privilege database credentials, this represents a critical privilege escalation risk for PostgreSQL deployments. No active exploitation (CISA KEV) or public POC identified at time of analysis.
Remote denial-of-service attacks against striso-control-firmware commit 54c9722 via buffer overflow in AuxJack function allow unauthenticated network attackers to crash the device. Despite the high CVSS 7.5 severity, impact is limited to availability (no code execution, data theft, or privilege escalation), and the vulnerability affects an unversioned development commit of specialized musical instrument firmware with a narrow user base. No public exploit code or active exploitation indicators identified at time of analysis.
Remote denial-of-service attack against striso-control-firmware commit 54c9722 allows network attackers to crash the device through a buffer overflow in the ThreadReadButtons function, resulting in complete service unavailability. CVSS 7.5 High severity with network attack vector requiring no authentication or user interaction. EPSS and KEV data not available; no public exploit code identified at time of analysis, though technical details disclosed in GitHub issue #5 could facilitate development.
Remote denial-of-service in F5 BIG-IP allows unauthenticated attackers to crash the Traffic Management Microkernel (TMM) by sending specially crafted UDP requests to virtual servers with classification profiles enabled. The vulnerability affects BIG-IP, BIG-IP Next CNF, and BIG-IP Next for Kubernetes platforms. No public exploit identified at time of analysis, with EPSS data unavailable for this recent CVE. Vendor-released patch available per F5 advisory K000158038.
Privilege escalation in F5 BIG-IP allows authenticated administrators to cross security boundaries and achieve elevated system access through a stack buffer overflow. The vulnerability affects all BIG-IP versions and requires high-privilege administrative credentials and direct network access to exploit. No public exploit code or active exploitation has been identified at time of analysis, but a vendor patch is available.
Remote code execution in GUARDIANWALL MailSuite and GUARDIANWALL Mail Security Cloud allows unauthenticated network attackers to execute arbitrary code via stack-based buffer overflow when pop3wallpasswd runs with grdnwww user privileges. Canon Marketing Japan has released patches for both on-premises (versions 1.4.00-2.4.26 affected) and SaaS deployments (pre-April 30, 2026 maintenance). CVSS 9.3 indicates critical severity with network vector and no authentication required, though EPSS score of 0.14% (33rd percentile) suggests limited real-world exploitation probability at time of analysis. SSVC assessment marks this as automatable with total technical impact but no confirmed exploitation.
arduino-esp32 is an Arduino core for the ESP32, ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6 and ESP32-H2 microcontrollers. Prior to 3.3.8, the WebServer multipart form parser in arduino-esp32 allocates a Variable Length Array (VLA) on the stack whose size is derived from an attacker-controlled HTTP header field (Content-Type: multipart/form-data; boundary=...) without enforcing any length limit. Sending a boundary string longer than ~8000 characters overflows the 8192-byte task stack of the loopTask, causing a crash and potential remote code execution. This vulnerability is fixed in 3.3.8.
After Effects versions 26.0, 25.6.4 and earlier are affected by a Stack-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Stack-based buffer overflow vulnerabilities exist in several underlying management service components accessed through the command-line interface of the AOS-8 and AOS-10 Operating Systems. An authenticated attacker with administrative privileges could exploit these vulnerabilities by sending specially crafted requests to the affected services. Successful exploitation could allow the attacker to execute arbitrary code with elevated privileges on the underlying operating system.
Stack-based buffer overflow vulnerabilities exist in several underlying management service components accessed through the command-line interface of the AOS-8 and AOS-10 Operating Systems. An authenticated attacker with administrative privileges could exploit these vulnerabilities by sending specially crafted requests to the affected services. Successful exploitation could allow the attacker to execute arbitrary code with elevated privileges on the underlying operating system.
Stack-based buffer overflow vulnerabilities exist in several underlying management service components accessed through the command-line interface of the AOS-8 and AOS-10 Operating Systems. An authenticated attacker with administrative privileges could exploit these vulnerabilities by sending specially crafted requests to the affected services. Successful exploitation could allow the attacker to execute arbitrary code with elevated privileges on the underlying operating system.
Stack-based buffer overflow vulnerabilities exist in several underlying management service components accessed through the command-line interface of the AOS-8 and AOS-10 Operating Systems. An authenticated attacker with administrative privileges could exploit these vulnerabilities by sending specially crafted requests to the affected services. Successful exploitation could allow the attacker to execute arbitrary code with elevated privileges on the underlying operating system.
Stack-based buffer overflow vulnerabilities exist in several underlying management service components accessed through the command-line interface of the AOS-8 and AOS-10 Operating Systems. An authenticated attacker with administrative privileges could exploit these vulnerabilities by sending specially crafted requests to the affected services. Successful exploitation could allow the attacker to execute arbitrary code with elevated privileges on the underlying operating system.
Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a network.
Stack-based buffer overflow in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
Stack-based buffer overflow in Siemens Solid Edge SE2026 allows arbitrary code execution when users open malicious PAR files. Attackers must deliver a weaponized PAR file and convince the user to open it, after which code executes with user's privileges. All versions prior to V226.0 Update 5 are vulnerable. No active exploitation confirmed (not in CISA KEV), but the attack relies on user interaction with a common CAD file format, making social engineering feasible in engineering/manufacturing environments.
Buffer overflow in macOS allows remote unauthenticated attackers to cause system crashes and denial of service without user interaction. Affects macOS Sequoia versions prior to 15.7.7 and macOS Tahoe versions prior to 26.5. Apple has released patches addressing the vulnerability through improved bounds checking. Despite network-based attack vector and low complexity (CVSS 7.5), EPSS score of 0.05% (15th percentile) indicates minimal observed exploitation activity, and CISA SSVC framework confirms no active exploitation detected. Automatable attack path suggests potential for scanning-based campaigns if exploited.
Buffer overflow in Apple operating systems allows local unauthenticated users to cause unexpected system termination or read kernel memory without requiring user interaction. The vulnerability affects iOS, iPadOS, macOS, tvOS, visionOS, and watchOS across multiple versions, with exploitation limited to local access. Vendor-released patches are available for all affected platforms, and EPSS scoring of 0.03% indicates exploitation remains unlikely despite the local attack vector.
Buffer overflow in Apple's image processing framework across iOS, iPadOS, macOS, tvOS, and watchOS allows remote attackers to cause denial of service through process memory corruption. Despite the CVSS 7.5 (High) rating and network attack vector, the vulnerability is rated low priority with only 2% EPSS exploitation probability (5th percentile), indicating minimal real-world threat activity. Apple has released patches in version 26.5 across all affected platforms. No active exploitation or public proof-of-concept has been identified at time of analysis.
Buffer overflow in Apple operating systems allows remote attackers to trigger application denial of service without authentication. Affects iOS/iPadOS, macOS (Sequoia, Sonoma, Tahoe), tvOS, visionOS, and watchOS across multiple versions. Vendor-released patches available for all affected platforms. No public exploit identified at time of analysis, with EPSS score of 0.12% (30th percentile) indicating low probability of widespread exploitation attempts. CVSS 7.5 reflects network-accessible unauthenticated attack causing high availability impact but limited to app termination rather than system-wide denial of service.
Stack buffer overflow in ImageMagick display tool prior to versions 7.1.2-21 and 6.9.13-46 allows local attackers to cause denial of service by crafting a malicious MIFF file that triggers memory corruption when a user opens the file and invokes the Load/Update menu via right-click interaction. CVSS score of 5.5 reflects local attack vector and requirement for user interaction, with impact limited to availability (denial of service) rather than code execution.
Stack-based buffer overflow in Squirrel up to version 3.2 within the validate_format function of sqstdlib/sqstdstring.cpp allows local authenticated attackers to corrupt stack memory, potentially achieving code execution or denial of service. Public exploit code is available, and the vulnerability has been reported to the project with no vendor response documented at time of analysis.
Stack-based buffer overflow in ipTIME A8004T router firmware 14.18.2 enables authenticated remote attackers to achieve complete system compromise via malformed WiFi configuration requests. The vulnerability exists in the formWifiBasicSet function's handling of the security_5g parameter. Public exploit code (GitHub POC) increases exploitation risk, though EPSS data and active exploitation status are not available. Vendor (EFM Networks) has not responded to disclosure or released a patch.
Stack overflow in PgBouncer before 1.25.2 enables malicious PostgreSQL backend servers to trigger remote code execution via SCRAM authentication nonce manipulation. The flaw stems from incorrect strlcat() return value checking during SCRAM client-final-message construction. Remote unauthenticated exploitation is possible (CVSS 8.1, AV:N/PR:N) but requires high attack complexity - specifically, the attacker must control or compromise the backend PostgreSQL server PgBouncer connects to. No public exploit identified at time of analysis; EPSS and KEV data not available in this assessment.
Buffer overflow in CROSS crypto_sign_open() function allows remote attackers to corrupt memory via malformed signature input due to integer underflow in message length validation. The vulnerability affects the reference implementation prior to commit fc6b7e7, enabling potential code execution or denial of service when processing untrusted signatures. The flaw exists in the core cryptographic signing operation with no authentication required, making it exploitable in any system integrating this algorithm for signature verification.
Stack-based buffer overflow in Tenda CX12L router firmware 16.03.53.12 allows authenticated remote attackers to achieve full system compromise via the PPTP server configuration interface. The vulnerability resides in the formSetPPTPServer function within /goform/SetPptpServerCfg and is exploitable over the network with low attack complexity. A public proof-of-concept exploit exists on GitHub, significantly lowering the barrier to exploitation, though CISA has not yet added this to the KEV catalog indicating no confirmed widespread active exploitation at this time.
Stack buffer overflow in kosma minmea 0.3.0 allows remote unauthenticated attackers to cause denial of service through crafted NMEA field data. The minmea_scan function's format specifier copies data to caller-provided buffers without size validation, enabling memory corruption when processing untrusted NMEA GPS sentences. CVSS 7.5 (High) with network attack vector and low complexity, though impact is currently limited to availability (DoS). Public exploit demonstration exists via GitHub Gist reference. EPSS data not available, not listed in CISA KEV at time of analysis.
Stack-based buffer overflow in nanoMODBUS v1.22.0 and earlier allows malicious Modbus TCP servers to execute arbitrary code on clients via oversized responses. When client applications call nmbs_read_holding_registers() or nmbs_read_input_registers(), the library fails to validate byte_count before writing server data to the caller's buffer, enabling up to 248 bytes of controlled overflow. No active exploitation confirmed (not in CISA KEV), but proof-of-concept code is publicly available and the vulnerability is automatable (SSVC) with network attack vector (CVSS AV:N/AC:L/PR:N). EPSS data not provided, but the combination of public POC, low complexity, and RCE potential warrants immediate attention for systems using nanoMODBUS as a client.
Stack-based buffer overflow in WatchGuard Agent discovery service on Windows enables adjacent attackers without authentication to crash the agent via crafted network packets. CVSS 7.1 (High) reflects adjacent network attack vector with high integrity impact. The vulnerability targets the discovery service component used for agent enrollment and network communication. No CISA KEV listing or public exploit code identified at time of analysis, though the local network attack vector limits exposure to adjacent attackers.
Stack-based buffer overflow in WatchGuard Agent's discovery service allows adjacent network attackers to crash the agent service without authentication. Affects Windows installations prior to version 1.25.03.0000. Vendor patch released addressing the vulnerability. SSVC framework indicates no active exploitation observed and manual exploitation required. While CVSS 7.1 (High) reflects network-adjacent access with high availability impact, actual risk is limited to denial-of-service - no code execution or data compromise possible per the CVSS vector (VC:N/VI:N/VA:H).
Stack-based buffer overflow in Sandboxie-Plus SbieSvc service enables sandboxed processes to escape isolation and execute code as SYSTEM. Affected versions 1.17.2 and earlier allow malicious sandboxed code to overflow a fixed 160-wide-character stack buffer in NamedPipeServer::OpenHandler via crafted named pipe open requests, bypassing the fundamental security boundary Sandboxie provides. Fixed in version 1.17.3. EPSS data unavailable, no CISA KEV listing or public exploit identified at time of analysis, but the security boundary violation represents a complete defeat of Sandboxie's core function.
Stack-based buffer overflow in Sandboxie-Plus ProcessServer handlers allows local authenticated attackers to execute arbitrary code as SYSTEM or crash the SbieSvc service. The vulnerability affects versions 1.17.2 and earlier, stems from unsafe wcscpy operations on unchecked WCHAR fields from service pipe requests, and has been patched in version 1.17.3. The service pipe's NULL DACL permits any local process to connect and trigger the flaw before authorization checks execute, enabling privilege escalation from low-privileged local accounts. No public exploit code identified at time of analysis, though the technical details in the GitHub advisory provide sufficient information for skilled attackers to develop exploits.
Local privilege escalation to SYSTEM in Sandboxie-Plus 1.17.2 and earlier allows low-privileged interactive users to trigger stack buffer overflow in SbieSvc service via unauthenticated IPC, bypassing sandbox isolation controls. The vulnerability exists in the RunSbieCtrl handler which processes crafted messages before security checks and copies unbounded input into a 128-character stack buffer. Fixed in version 1.17.3. EPSS data unavailable; not listed in CISA KEV at time of analysis, but publicly disclosed via GitHub Security Advisory with technical details sufficient for exploit development.
Stack buffer overflow in Sandboxie-Plus SbieSvc proxy service enables SYSTEM privilege escalation from sandboxed processes, including Security Hardened Sandboxes. Attackers chain an information disclosure (returning up to 32KB uninitialized stack memory with ASLR/stack cookie bypass) with an unbounded memcpy overflow in the GetRawInputDeviceInfoSlave IPC handler. Intel CET shadow stacks block ROP exploitation but not the information leak itself. Vendor-released patch available in version 1.17.3. No public exploit identified at time of analysis, but attack complexity is rated high (AC:H) with low privilege requirements (PR:L), making this viable for motivated attackers targeting sandbox environments.
Stack-based buffer overflow in D-Link DI-8100 router firmware 16.07.26A1 allows authenticated remote attackers with high privileges to execute arbitrary code via malformed ID parameter to yyxz.asp administrative interface. Public exploit code exists on GitHub, demonstrating reliable exploitation. CVSS 7.3 (High) reflects network attack vector but requires admin-level authentication, limiting real-world exposure to compromised credentials or insider scenarios.
Stack-based buffer overflow in EFM ipTIME NAS1dual 1.5.24 allows remote unauthenticated attackers to achieve complete system compromise via the get_csrf_whites function in /cgi/advanced/misc_main.cgi. Public exploit code exists on GitHub, demonstrating practical exploitability despite lack of vendor response to responsible disclosure. CVSS 8.9 (Critical) with EPSS data unavailable; attack requires no authentication, low complexity, and no user interaction (AV:N/AC:L/PR:N/UI:N), making this a high-priority remote attack surface.
Stack-based buffer overflow in WDR201A WiFi Extender firewall.cgi and makeRequest.cgi binaries enables remote unauthenticated attackers to execute arbitrary code through crafted POST requests with oversized Content-Length headers. The vulnerability affects hardware version 2.1 running firmware LFMZX28040922V1.02, with publicly available proof-of-concept exploit code documented via AI-assisted vulnerability research. CVSS 8.3 with high attack complexity indicates exploitation requires advanced technical skills, though the network vector and lack of authentication requirements make this a significant risk for exposed IoT devices.
Stack overflow in Flipper Zero Firmware (commit ad2a80) enables local arbitrary code execution with high privileges through exploitation of the Main function. SSVC framework confirms POC availability and total technical impact. CVSS 8.4 reflects local attack vector with no authentication barrier. No vendor-released patch identified at time of analysis, though GitHub issue tracking indicates developer awareness.
Stack-based buffer overflow in JS8Call allows remote code execution via crafted radio transmission containing an oversized Maidenhead grid locator. CVSS 10.0 reflects network-reachable attack with no authentication required. Both JS8Call (through 2.3.1) and JS8Call-improved (before 3.0) are affected by the overflow in grid2deg function within APRSISClient.cpp. Vendor patch available for JS8Call-improved 3.0+; JS8Call project status unclear. No confirmed active exploitation or public POC identified at time of analysis, though attack vector is straightforward for actors with radio transmission capabilities.
Stack buffer overflow in AGL agl-service-can-low-level's uds-c library enables remote code execution on vulnerable automotive ECUs. The send_diagnostic_request function copies up to 7 bytes into a 6-byte stack buffer without bounds checking, allowing 1-4 bytes of controlled stack corruption. On 32-bit ARM ECUs without stack canaries (common in automotive deployments), attackers can overwrite return addresses to achieve arbitrary code execution. CVSS 7.5 with network attack vector and no authentication required indicates critical exposure, though CVSS impact vector (C:N/I:N/A:H) appears inconsistent with RCE capability described - vendor assessment may undervalue confidentiality/integrity impact of code execution.
Stack buffer overflow in miaofng/uds-c library allows adjacent network attackers to execute arbitrary code via crafted diagnostic payload. The send_diagnostic_request function allocates only 6 bytes for MAX_DIAGNOSTIC_PAYLOAD_SIZE but accepts up to 7 bytes of payload (MAX_UDS_REQUEST_PAYLOAD_LENGTH), enabling 4-byte overflow when combined with pid_length=2. Affects commit e506334e270d77b20c0bc259ac6c7d8c9b702b7a from October 2016 and likely later versions unless patched. No CISA KEV listing or EPSS data indicates exploitation remains theoretical; vulnerability appears in automotive diagnostic library with limited deployment exposure.
Remote unauthenticated attackers can crash socketcand 0.4.2 daemon by sending a malformed CAN bus name that triggers a stack-based buffer overflow in the main function's socketcand.c implementation. The CVSS vector indicates network-accessible denial of service with no authentication required. A publicly available proof-of-concept exists (GitHub Gist reference), but CISA KEV status is not confirmed, and EPSS data is unavailable. The low attack complexity (AC:L) and network attack vector (AV:N) make this readily exploitable against exposed instances, though the impact is currently limited to availability (A:H) with no confirmed confidentiality or integrity impacts.
Remote code execution in cannelloni v2.0.0 allows unauthenticated network attackers to crash the service or execute arbitrary code by sending malformed CAN FD frames that trigger buffer overflows in two separate parsing functions (parseCANFrame in parser.cpp and decodeFrame in decoder.cpp). The CVSS score of 9.8 reflects network-accessible exploitation requiring no authentication or user interaction, with complete system compromise possible. Public proof-of-concept code exists (GitHub Gist reference), elevating immediate exploitation risk despite no CISA KEV listing, suggesting targeted rather than mass exploitation scenarios.
Remote code execution in Open Vehicle Monitoring System 3 (OVMS3) version 3.3.005 allows network-based attackers to execute arbitrary code or crash the system without authentication. A buffer overflow in the GVRET CAN data parser (canformat_gvret.cpp) fails to validate length fields in binary frames, enabling memory corruption. CVSS 10.0 reflects unauthenticated network vector with scope change, but no public exploit or active exploitation confirmed at time of analysis. EPSS data unavailable; real-world risk depends on OVMS3 deployment exposure (typically vehicle telematics environments).
Remote code execution in Open Vehicle Monitoring System 3 (OVMS3) version 3.3.005 allows unauthenticated network attackers to execute arbitrary code or crash the system by sending malformed CANswitch frames with invalid DLC (Data Length Code) values. The buffer overflow occurs in the canformat_canswitch.cpp parser module which fails to validate frame length parameters before processing, enabling memory corruption. A proof-of-concept exploit is publicly available on GitHub, and SSVC assessment indicates the vulnerability is automatable with partial technical impact, though no active exploitation has been confirmed by CISA KEV at time of analysis.
Stack buffer overflow in AGL agl-service-can-low-level through version 17.1.12 enables remote code execution on automotive ECUs. The vulnerability exists in the uds-c library's send_diagnostic_request function, where a miscalculation between buffer size (6 bytes) and copy length (7 bytes) allows 1-4 bytes of controlled stack overflow. On 32-bit ARM automotive systems without stack protection, attackers can overwrite return addresses to achieve arbitrary code execution. CVSS 7.5 High severity with network attack vector and no authentication required, though CVSS impact ratings (C:N/I:N/A:H) appear inconsistent with the RCE capability described. No public exploit identified at time of analysis, EPSS data unavailable.
Buffer overflow in Open Vehicle Monitoring System 3 (OVMS3) version 3.3.005 enables remote code execution when processing malicious PCAP files. The canformat_pcap.cpp parser fails to validate the phdr.len field, allowing attackers to overflow stack buffers and execute arbitrary code with high confidentiality, integrity, and availability impact. Public proof-of-concept code exists (GitHub Gist), though no active exploitation is confirmed by CISA KEV. SSVC assessment indicates automatable exploitation despite requiring user interaction to open crafted PCAP files.
Buffer overflow in Absolute Secure Access server (versions before 14.50) allows authenticated remote attackers with modified client software to crash the server through specially crafted messages. This denial-of-service vulnerability requires low-privilege authentication and presents moderate real-world risk given the client modification prerequisite. EPSS data not available; no confirmed active exploitation or public proof-of-concept identified at time of analysis.
Buffer overflow in Absolute Secure Access Windows client versions prior to 14.50 allows local attackers with high privileges to trigger denial of service by exploiting improper memory handling. The vulnerability requires local access and elevated administrative privileges, limiting exploitation to authenticated users already possessing administrative control of the affected system. Vendor-released patch: version 14.50 or later.
Buffer overflow in Absolute Secure Access Windows client prior to version 14.50 allows local attackers to cause denial of service by triggering a system blue screen. The vulnerability requires local access to the affected system and can be exploited without user interaction or authentication. A vendor patch is available.
Buffer overflow in Absolute Secure Access prior to version 14.50 allows remote attackers to cause denial of service by sending a cryptographically valid message to the client, potentially overwriting memory. The vulnerability requires network access and user interaction (UI:P), making it a moderate-complexity attack with low availability impact. Vendor has released a patch available as of the CVE disclosure.
Buffer overflow in Secure Access message parsing prior to version 14.50 allows remote attackers with control of a modified server to send specially crafted packets that corrupt memory, potentially causing denial of service or limited information disclosure. Attack requires network access, high complexity, and user interaction; CVSS 2.3 reflects limited real-world impact despite the vulnerability class.
Stack corruption in FreeBSD libnv library allows local authenticated attackers to elevate privileges to root when exploiting setuid-root applications. The vulnerability stems from libnv's select(2) implementation failing to validate socket descriptors against FD_SETSIZE limits (1024), enabling descriptor exhaustion attacks that corrupt stack memory. Confirmed by FreeBSD Security Advisory SA-26:16 with patches available across all stable branches. EPSS score of 0.02% indicates low observed exploitation probability, and no active exploitation or public POC identified at time of analysis.
Denial of service in Wireshark 4.6.0-4.6.4 and 4.4.0-4.4.14 via stack buffer overflow in the AMR-NB codec decoder allows local attackers with user interaction to crash the application. The vulnerability requires opening a specially crafted network capture file, making it exploitable in scenarios where users are tricked into opening untrusted PCAP files or when Wireshark auto-opens recent captures.
Stack buffer overflow in Wireshark's BEEP protocol dissector causes denial of service when processing malformed network packets. Versions 4.6.0-4.6.4 and 4.4.0-4.4.14 are vulnerable; a local user with the ability to interact with Wireshark or supply crafted BEEP traffic can trigger a crash via a specially crafted packet that requires user interaction to open or process. No public exploit code or active exploitation has been identified at time of analysis.
Stack buffer overflow in Wireshark's ZigBee protocol dissector (versions 4.6.0-4.6.4 and 4.4.0-4.4.14) causes application crash and denial of service when processing malformed ZigBee packets. An attacker must trick a user into opening a crafted packet capture file or visiting a malicious webpage serving the packet, since the vulnerability requires local file access and user interaction. No active exploitation has been publicly reported.
Stack buffer overflow in Wireshark HTTP protocol dissector (versions 4.6.0-4.6.4 and 4.4.0-4.4.14) causes application crash when processing malformed HTTP packets, resulting in denial of service. Local attackers with ability to trigger packet analysis via user interaction can crash the application and disrupt network traffic inspection workflows.
Stack-based buffer overflow in Tenda 4G300 US_4G300V1.0Mt_V1.01.42_CN_TDC01 allows authenticated remote attackers to execute arbitrary code with elevated privileges via crafted SafeMacFilter requests. The vulnerability resides in function sub_427C3C at endpoint /goform/SafeMacFilter, where insufficient input validation of the 'page' parameter enables memory corruption. Public exploit code exists on GitHub (Axelioc/CVE), significantly lowering the barrier to exploitation for attackers with valid router credentials. CVSS 7.4 reflects high confidentiality, integrity, and availability impact requiring only low-privilege authentication.
Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 4.8.0 to before version 4.14.4, a stack-based buffer overflow exists in print_hex_string() in wazuh-remoted. The bug is triggered when formatting attacker-controlled bytes using sprintf(dst_buf + 2*i, "%.2x", src_buf[i]) on platforms where char is treated as signed and the compiled code sign-extends bytes before the variadic call. For input bytes such as 0xFF, the formatting can emit "ffffffff" (8 chars) instead of "ff" (2 chars), causing an out-of-bounds write past a fixed 2049-byte stack buffer. The vulnerable path is reachable remotely prior to any agent authentication/registration logic via TCP/1514 when an oversized length prefix causes the “unexpected message (hex)” diagnostic path to run. Additionally, the same unauthenticated oversized-message diagnostic path logs an attacker-controlled hex dump to /var/ossec/logs/ossec.log for each trigger, allowing remote log amplification that can degrade monitoring fidelity and consume disk/I/O. This log amplification is reachable even without triggering the sign-extension overflow (e.g., using bytes < 0x80). This issue has been patched in version 4.14.4.
A post-authentication Stack-based Buffer Overflow vulnerabilities in SonicOS allows a remote attacker to crash a firewall.
TOTOLINK A3002RU V3 <= V3.0.0-B20220304.1804 was discovered to contain a stack-based buffer overflow via the hostname parameter in the formMapDelDevice function.
A vulnerability was determined in Tenda HG3 2.0. Impacted is the function formUploadConfig of the file /boaform/formIPv6Routing. This manipulation of the argument destNet causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.
Stack-based buffer overflow in Tenda FH1202 router firmware 1.2.0.14 allows authenticated remote attackers to execute arbitrary code via crafted HTTP requests to the /goform/WrlclientSet endpoint. The vulnerability resides in the fromWrlclientSet function of the httpd component, triggered by malicious 'Go' parameter input. Publicly available proof-of-concept exploit code increases immediate exploitation risk for exposed devices. EPSS data not provided, but public POC and low attack complexity (AC:L) indicate elevated real-world risk despite authentication requirement (PR:L).
Stack-based buffer overflow in Tenda FH1202 router firmware 1.2.0.14(408) allows authenticated remote attackers to execute arbitrary code via crafted 'Go' parameter to the /goform/WrlExtraSet endpoint in the httpd service. A public proof-of-concept exploit exists (GitHub), enabling reliable exploitation despite low attack complexity. CVSS 7.4 (High) severity reflects significant impact potential, though exploitation requires valid user credentials (PR:L), limiting mass-scale attacks to scenarios where default/weak credentials are common in Tenda routers.
Memory corruption in arduino-esp32's NBNS packet handler allows adjacent network attackers to achieve remote code execution on ESP32-family microcontrollers without authentication. Affects all versions prior to 3.3.8 when NetBIOS is explicitly enabled via NBNS.begin(). The parser trusts attacker-controlled name_len field from UDP port 137 traffic, writing unbounded data to fixed-size buffers. EPSS data not available, no CISA KEV listing, but GitHub security advisory confirms the vulnerability with patch released in version 3.3.8.
Unchecked directory name buffer in Delta Electronics AS320T enables remote code execution without authentication. The CVSS vector (AV:N/AC:L/PR:N/UI:N) confirms this is a remotely exploitable stack buffer overflow (CWE-121) requiring no user interaction or credentials. Delta Electronics disclosed this vulnerability in security advisory PCSA-2026-00006, affecting an industrial automation product. No EPSS score or KEV status available at time of analysis, but the trivial exploitation requirements (network accessible, no authentication, low complexity) present immediate risk to exposed AS320T devices.
Remote code execution in Delta Electronics AS320T allows unauthenticated network attackers to exploit an unchecked buffer overflow in filename processing to execute arbitrary code with high impact to confidentiality, integrity, and availability. The CVSS 9.8 critical score reflects network-accessible attack surface with no authentication or user interaction required. No EPSS or KEV data available at time of analysis, but vendor advisory confirms multiple related vulnerabilities affecting the same product line.
Stack-based buffer overflow in rust-openssl's MdCtxRef::digest_final() allows safe Rust code to corrupt memory when EVP_DigestFinal() writes beyond the provided output buffer boundary. The vulnerability occurs when the output buffer is smaller than EVP_MD_CTX_size(ctx), causing EVP_DigestFinal() to write past the buffer end and corrupt stack memory. Vendor-released patch available in version 0.10.78 via GitHub commit 826c3888. No public exploit identified at time of analysis, but exploitable from memory-safe Rust code paths, violating Rust's safety guarantees.
Stack-based buffer overflow in Dell PowerProtect Data Domain DD OS allows remote unauthenticated attackers to execute arbitrary commands on vulnerable appliances. Affects Feature Release versions 7.7.1.0-8.6, LTS2025 (8.3.1.0-8.3.1.10), and LTS2024 (7.13.1.0-7.13.1.60). Despite network-accessible attack vector (AV:N/PR:N), high attack complexity (AC:H) indicates specialized exploit conditions. CISA SSVC framework rates exploitation as 'none' and automatable as 'no', suggesting manual, targeted exploitation rather than mass scanning. No active exploitation confirmed at time of analysis. Dell has released patches across all affected release tracks (DSA-2026-060).
PJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, a stack buffer overflow exists in pjsip_auth_create_digest2() in PJSIP when using pre-computed digest credentials (PJSIP_CRED_DATA_DIGEST). The function copies credential data using cred_info->data.slen as the length without an upper-bound check, which can overflow the fixed-size ha1 stack buffer (128 bytes) if data.slen exceeds the expected digest string length.
Stack-based buffer overflow in Dell PowerProtect Data Domain versions 7.7.1.0-8.6, LTS2025 8.3.1.0-8.3.1.20, and LTS2024 7.13.1.0-7.13.1.60 allows high-privileged local attackers to execute arbitrary commands as root. The vulnerability requires local access and elevated privileges, limiting exposure to insider threats or compromised administrative accounts rather than remote attackers. No public exploit has been identified at time of analysis.
Remote code execution in ASUSTOR ADM (4.1.0-4.3.3.RR42 and 5.0.0-5.1.2.REO1) allows authenticated high-privilege attackers to execute arbitrary code via stack-based buffer overflow in VPN client components. The vulnerability combines unbounded sscanf() calls with format string weaknesses (printf with user-controlled data), exploitable due to absent PIE and stack canary protections. EPSS exploitation probability is low (0.23%, 46th percentile) with no public exploit code identified at time of analysis, suggesting limited real-world targeting despite high CVSS score.
Stack-based buffer overflow in silex technology's SD-330AC (Ver.1.42 and earlier) and AMC Manager (Ver.5.0.2 and earlier) enables authenticated remote attackers to execute arbitrary code on the device via maliciously crafted redirect URLs. Reported by JPCERT with vendor advisories published, though EPSS score of 0.04% (12th percentile) indicates low observed exploitation probability. No active exploitation confirmed (not in CISA KEV), and SSVC assessment marks exploitation status as 'none' despite the critical nature of remote code execution capability.