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Buffer Overflow

memory HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

How It Works

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions. This overwrites whatever data or code exists there, corrupting program state and potentially giving attackers control over execution flow.

Stack-based overflows are the most common variant. When a function allocates a fixed-size buffer on the stack and then copies user-controlled input without proper bounds checking, attackers can overflow past the buffer to overwrite the function's return address. When the function completes, instead of returning to legitimate code, execution jumps to attacker-specified memory containing malicious shellcode. Heap-based overflows work differently—they corrupt heap metadata like chunk size fields or free list pointers, leading to arbitrary memory writes when the allocator processes the corrupted structures.

Modern exploitation bypasses defensive mechanisms through techniques like Return-Oriented Programming (ROP), which chains together existing code snippets to avoid non-executable memory protections. Attackers may also use heap spraying to reliably position shellcode at predictable addresses, defeating address randomization.

Impact

  • Remote code execution — attacker gains ability to run arbitrary commands with the privileges of the vulnerable process
  • Privilege escalation — exploiting kernel or setuid program overflows to gain root/SYSTEM access
  • Denial of service — crashes and memory corruption that render systems unusable
  • Information disclosure — reading sensitive data from adjacent memory regions that should be inaccessible
  • Authentication bypass — overwriting security-critical variables like permission flags or user IDs

Real-World Examples

Fortinet FortiOS suffered a critical buffer overflow (CVE-2025-32756) that allowed unauthenticated remote attackers to execute code as root on firewalls and VPN gateways. Attackers actively exploited this to compromise enterprise network perimeters before patches were available.

The Slammer worm from 2003 exploited a stack overflow in Microsoft SQL Server, spreading to 75,000 hosts in ten minutes by sending a single malformed UDP packet that overwrote the return address with shellcode. No authentication was required.

OpenSSH historically contained a heap overflow in challenge-response authentication that allowed pre-authentication remote root compromise on Unix systems, demonstrating how memory corruption in privileged network services creates maximum impact scenarios.

Mitigation

  • Memory-safe languages — Rust, Go, and modern managed languages prevent buffer overflows by design through automatic bounds checking
  • Stack canaries — random values placed before return addresses that detect corruption before control transfer
  • Address Space Layout Randomization (ASLR) — randomizes memory locations making exploitation less reliable
  • Data Execution Prevention (DEP/NX) — marks memory regions as non-executable, preventing direct shellcode execution
  • Bounds checking — validate input sizes before copying, use safe functions like strncpy instead of strcpy
  • Fuzzing and static analysis — automated testing to discover overflows before deployment

Recent CVEs (41349)

EPSS 0% CVSS 8.8
HIGH PATCH This Week

Privilege escalation in Windows 11 (24h2, 26h1) and Windows Server 2022 (23h2) via heap overflow allows authenticated local users to gain system-level access. The vulnerability requires valid credentials but no user interaction, making it a direct path to complete system compromise. No patch is currently available.

Windows Buffer Overflow Heap Overflow +6
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Windows ReFS contains an out-of-bounds read vulnerability affecting Server 2019, 2022, 2025, and Windows 11 26h1 that enables authenticated local users to escalate privileges with high impact to confidentiality, integrity, and availability. The vulnerability requires low attack complexity and no user interaction, making it exploitable by any authenticated user on the system. No patch is currently available for this HIGH severity issue.

Windows Buffer Overflow Information Disclosure +15
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability [CVSS 7.8 HIGH]

Windows Buffer Overflow Information Disclosure +15
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Privilege escalation in Azure Linux Virtual Machines results from a heap-based buffer overflow that authenticated local users can exploit to gain elevated system access. An attacker with valid credentials can trigger memory corruption to bypass privilege restrictions and assume administrative control of the affected virtual machine. No patch is currently available, making this a critical risk for organizations running Azure Linux infrastructure.

Buffer Overflow Heap Overflow Microsoft +1
NVD VulDB
EPSS 0% CVSS 8.8
HIGH This Week

vulnerability in Fortinet FortiSwitchAXFixed 1.0.0 versions up to 1.0.1 is affected by classic buffer overflow (CVSS 8.8).

Buffer Overflow Fortinet
NVD VulDB
EPSS 0% CVSS 7.7
HIGH PATCH This Week

High severity vulnerability in ImageMagick. MagnifyImage uses a fixed-size stack buffer. When using a specific image it is possible to overflow this buffer and corrupt the stack.

Buffer Overflow Stack Overflow Red Hat +2
NVD GitHub VulDB
EPSS 0% CVSS 8.1
HIGH PATCH This Week

High severity vulnerability in ImageMagick. An integer overflow in DIB coder can result in out of bounds read or write

Buffer Overflow Information Disclosure Imagemagick
NVD GitHub VulDB
EPSS 0% CVSS 7.1
HIGH PATCH This Week

High severity vulnerability in ImageMagick. A stack buffer overflow exists in ImageMagick's morphology kernel parsing functions. User-controlled kernel strings exceeding a buffer are copied into fixed-size stack buffers via memcpy without bounds checking, resulting in stack corruption.

Buffer Overflow Linux Red Hat +2
NVD GitHub VulDB
EPSS 0% CVSS 7.5
HIGH POC This Week

The rtsock_msg_buffer() function serializes routing information into a buffer. As a part of this, it copies sockaddr structures into a sockaddr_storage structure on the stack. [CVSS 7.5 HIGH]

Privilege Escalation Buffer Overflow Memory Corruption +1
NVD VulDB GitHub
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in UTT HiPER 810G firmware through version 1.7.7-1711 via a buffer overflow in the /goform/formApMail handler allows authenticated attackers to achieve complete system compromise. Public exploit code exists for this vulnerability, and no patch is currently available, leaving affected devices at elevated risk. The attack requires network access but no user interaction, making it a significant threat to organizations using this device.

Buffer Overflow 810g Firmware Utt
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Unauthenticated remote attackers can achieve complete system compromise (code execution, data theft, and denial of service) against UTT HiPER 810G firmware versions up to 1.7.7-1711 through a buffer overflow in the /goform/getOneApConfTempEntry endpoint. Public exploit code is available and actively being leveraged in attacks. No patch is currently available for affected devices.

Buffer Overflow 810g Firmware Utt
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack-based buffer overflow in Tenda FH1202 firmware version 1.2.0.14(408) allows authenticated remote attackers to achieve complete system compromise through a malformed page parameter in the /goform/P2pListFilter endpoint. Public exploit code exists for this vulnerability, and no patch is currently available, leaving affected devices at immediate risk of code execution and data theft.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack overflow in Tenda FH1202 firmware version 1.2.0.14(408) allows authenticated attackers to achieve remote code execution through a malicious page parameter in the /goform/DhcpListClient endpoint. Public exploit code is available and the vulnerability remains unpatched, creating significant risk for deployed devices. This affects both the Tenda FH1202 router and Stack Overflow services with high severity impact on confidentiality, integrity, and availability.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack-based buffer overflow in Tenda FH1202 firmware version 1.2.0.14(408) allows remote authenticated attackers to achieve complete system compromise through manipulation of the page parameter in the /goform/NatStaticSetting function. Public exploit code exists for this vulnerability and no patch is currently available. The flaw requires valid credentials but can be exploited over the network with no user interaction.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack-based buffer overflow in Tenda FH1202 firmware version 1.2.0.14(408) allows remote authenticated attackers to achieve full system compromise through manipulation of the webSiteId parameter in the /goform/webtypelibrary function. Public exploit code exists for this vulnerability, and no patch is currently available. The high CVSS score of 8.8 reflects the potential for complete confidentiality, integrity, and availability impact.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 9.3
CRITICAL Act Now

Remote code execution in Atop Technologies EHG2408-series industrial Ethernet switches (including the EHG2408 and EHG2408-2SFP firmware) allows unauthenticated attackers to hijack the device's execution flow via a stack-based buffer overflow and run arbitrary code. The flaw was reported through Taiwan's CERT (TWCERT) and carries a CVSS 4.0 base score of 9.3, reflecting fully unauthenticated network exploitation with high confidentiality, integrity, and availability impact. There is no public exploit identified at time of analysis, and the EPSS score is low (0.14%, 34th percentile), suggesting exploitation has not yet been observed at scale.

RCE Buffer Overflow Stack Overflow +2
NVD VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack overflow in Tenda FH1202 firmware version 1.2.0.14(408) allows remote attackers with low privileges to execute arbitrary code through crafted mit_ssid parameters sent to the AdvSetWrlsafeset function. Public exploit code exists for this vulnerability and no patch is currently available. The attack requires network access but no user interaction, making it readily exploitable in affected deployments.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda i3 1.0.0.6(2204) firmware allows unauthenticated attackers to achieve full system compromise through a stack-based buffer overflow in the WifiMacFilterSet function. Public exploit code exists for this vulnerability, increasing the risk of active exploitation. No patch is currently available, requiring immediate mitigation through network segmentation or device isolation.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda i3 firmware versions up to 1.0.0.6(2204) via stack-based buffer overflow in the WiFi MAC filter function allows unauthenticated attackers to achieve full system compromise over the network. Public exploit code exists for this vulnerability and no patch is currently available. The flaw requires only low complexity to exploit and affects the confidentiality, integrity, and availability of affected devices.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack-based buffer overflow in Tenda i3 1.0.0.6(2204) firmware allows authenticated remote attackers to achieve code execution by manipulating the cmdinput parameter in the /goform/exeCommand function. Public exploit code exists for this vulnerability and no patch is currently available, placing affected devices at immediate risk.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack-based buffer overflow in Tenda i3 1.0.0.6(2204) firmware allows authenticated remote attackers to achieve complete system compromise through manipulation of ping parameters in the setAutoPing function. Public exploit code exists for this vulnerability and no patch is currently available, creating significant risk for affected deployments.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack overflow in Tenda i3 firmware version 1.0.0.6(2204) allows authenticated remote attackers to achieve full system compromise through a malformed funcpara1 parameter in the /goform/setcfm endpoint. Public exploit code exists for this vulnerability, and no patch is currently available. An attacker with network access and valid credentials can execute arbitrary code with full system privileges.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 7.5
HIGH This Week

Delta Electronics COMMGR2 has Buffer Over-read DoS vulnerability. [CVSS 7.5 HIGH]

Buffer Overflow Denial Of Service Industrial +2
NVD VulDB
EPSS 0% CVSS 9.8
CRITICAL Act Now

Stack-based buffer overflow in Delta Electronics COMMGR2 communication management software. ICS vulnerability enabling remote code execution on industrial communication gateways.

Buffer Overflow Industrial Stack Overflow +2
NVD VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack-based buffer overflow in Tenda F453 firmware 1.0.0.3 allows remote attackers with valid credentials to achieve unauthenticated code execution through a malformed GO parameter in the WrlclientSet function. Public exploit code exists for this vulnerability, and no patch is currently available. Affected organizations using vulnerable F453 devices should implement network segmentation and access controls to mitigate exploitation risk.

Buffer Overflow Golang Stack Overflow +2
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack-based buffer overflow in Tenda F453 firmware version 1.0.0.3 allows authenticated remote attackers to achieve complete system compromise through a malformed GO parameter in the WrlExtraSet function. Public exploit code exists for this vulnerability, and no patch is currently available. Affected systems face high risk of unauthorized code execution, data theft, and service disruption.

Buffer Overflow Golang Stack Overflow +2
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack-based buffer overflow in Tenda F453 firmware allows unauthenticated remote attackers to execute arbitrary code through the cmdinput parameter in the /goform/exeCommand function, with public exploit code already available. The vulnerability affects F453 firmware version 1.0.0.3 and has a CVSS score of 8.8, enabling complete compromise of affected devices without requiring user interaction. No patch is currently available.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda F453 firmware versions 1.0.0.3 and 3.As via stack-based buffer overflow in the PPTP client configuration endpoint allows unauthenticated network attackers to achieve full system compromise. Public exploit code exists for this vulnerability, and no patch is currently available, creating significant risk for affected devices.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack-based buffer overflow in Tenda F453 firmware versions 1.0.0.3/1.1f allows authenticated remote attackers to execute arbitrary code through malformed funcname/funcpara1 parameters in the /goform/setcfm endpoint. Public exploit code exists for this vulnerability, and no patch is currently available. The high CVSS score of 8.8 reflects the complete compromise potential of affected devices.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack-based buffer overflow in Tenda F453 1.0.0.3 firmware allows authenticated attackers to achieve remote code execution through improper input validation in the QuickIndex handler. Public exploit code exists for this vulnerability, and no patch is currently available, leaving affected devices at significant risk of compromise.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack-based buffer overflow in Tenda F453 1.0.0.3 firmware allows authenticated remote attackers to achieve full system compromise through a malicious page parameter in the webExcptypemanFilter function. Public exploit code exists for this vulnerability, and no patch is currently available. The attack requires valid credentials but no user interaction, making it a significant risk for affected devices.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Wavlink WL-WN579X3-C firmware through stack-based buffer overflow in the firewall.cgi module allows unauthenticated attackers to achieve complete system compromise via manipulation of the del_flag parameter. Public exploit code exists for this vulnerability, and no patch is currently available despite vendor notification. Affected users should immediately restrict network access to the affected device until a firmware update becomes available.

Buffer Overflow Stack Overflow Wl Wn579x3 C Firmware +1
NVD GitHub VulDB
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

Wavlink NU516U1 firmware 251208 has a buffer overflow enabling remote code execution through crafted HTTP requests to the CGI interface.

Buffer Overflow Wl Nu516u1 Firmware Wavlink
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in H3C Magic B1 firmware through a buffer overflow in the SSID configuration function allows unauthenticated attackers to gain complete system compromise over the network. Public exploit code exists for this vulnerability, and no patch is currently available from the vendor despite early disclosure notification. The flaw affects firmware versions up to 100R004 and requires only low complexity to exploit with valid credentials.

Buffer Overflow Magic B1 Firmware H3C
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in UTT HiPER 810G firmware up to version 1.7.7-171114 through a stack buffer overflow in the DNS filter configuration function allows authenticated attackers to execute arbitrary commands with full system privileges. Public exploit code is available for this vulnerability, increasing the risk of active exploitation. No patch is currently available, requiring organizations to implement network-level mitigations or device replacement until a fix is released.

Buffer Overflow 810g Firmware Utt
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in UTT HiPER 810G firmware through version 1.7.7-171114 stems from an unsafe strcpy operation in the /goform/formRemoteControl function that enables unauthenticated attackers to trigger a buffer overflow. Public exploit code exists for this vulnerability, and no patch is currently available, leaving affected devices at immediate risk.

Buffer Overflow 810g Firmware Utt
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

A buffer overflow in the NTP configuration handler of UTT HiPER 810G firmware versions up to 1.7.7-171114 enables authenticated remote attackers to achieve complete system compromise through memory corruption. Public exploit code exists for this vulnerability, and no patch is currently available. Affected devices face immediate risk of remote code execution with high privileges from any authenticated user.

Buffer Overflow 810g Firmware Utt
NVD GitHub VulDB
EPSS 0% CVSS 7.5
HIGH This Week

Crypt::Sodium::XS versions through 0.001000 for Perl has potential integer overflows. Combined aead encryption, combined signature creation, and bin2hex functions do not check that output size will be less than SIZE_MAX, which could lead to integer wraparound causing an undersized output buffer. [CVSS 7.5 HIGH]

Buffer Overflow Denial Of Service Integer Overflow +1
NVD
EPSS 0% CVSS 9.8
CRITICAL Act Now

Perl Crypt::NaCl::Sodium module through 2.002 has potential integer overflows in cryptographic operations that could weaken security guarantees.

Buffer Overflow Integer Overflow Crypt +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda FH451 firmware via stack-based buffer overflow in the QuickIndex function allows unauthenticated attackers to execute arbitrary code by sending crafted requests with oversized PPPOEPassword parameters. Public exploit code exists for this vulnerability, and no patch is currently available. The attack requires network access and affects firmware version 1.0.0.9 and potentially other versions.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda FH451 firmware via stack-based buffer overflow in the WAN configuration endpoint allows unauthenticated attackers to achieve full system compromise through malicious wanmode or PPPOEPassword parameters. Public exploit code exists for this vulnerability, and no patch is currently available. Stack Overflow products are also reported as affected.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Stack overflow in Tenda FH451 firmware's setcfm function allows authenticated remote attackers to achieve complete system compromise through malicious funcname or funcpara1 parameters. Public exploit code exists for this vulnerability, and no patch is currently available. The flaw affects firmware version 1.0.0.9 and enables remote code execution with high impact to confidentiality, integrity, and availability.

Buffer Overflow Stack Overflow Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 7.5
HIGH PATCH This Week

PJSIP versions prior to 2.17 are vulnerable to a stack buffer overflow in the RTP payload parsing mechanism when processing more frames than allocated buffers can accommodate, enabling remote denial of service attacks over the network without authentication. An attacker can trigger a crash by sending specially crafted RTP packets containing excessive frame data, causing the application to become unavailable.

Buffer Overflow Red Hat Pjsip
NVD GitHub VulDB
EPSS 0% CVSS 7.2
HIGH POC This Week

Stack-based buffer overflow in Wavlink WL-NU516U1 firmware's login.cgi allows remote attackers with high privileges to achieve complete system compromise through a malformed ipaddr parameter. Public exploit code exists for this vulnerability, and no patch is currently available. The flaw enables unauthenticated remote code execution with full read, write, and execution capabilities on affected devices.

Buffer Overflow Stack Overflow Wl Nu516u1 Firmware +1
NVD GitHub VulDB
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

An out-of-bounds write in the Zephyr RTOS DNS resolver (dns_unpack_name()) lets a crafted DNS response corrupt memory on any device built with CONFIG_DNS_RESOLVER enabled, because the function caches the buffer's remaining tailroom once and reuses that stale value while appending decompressed DNS labels, allowing the terminating null byte to land past the end of the buffer. Exploitation is remote and unauthenticated (CVSS:3.1/AV:N/AC:L/PR:N/UI:N) but reactive: the target must itself initiate a name lookup and the attacker must be positioned to answer it - by operating a hostile or man-in-the-middle resolver or spoofing responses - so an adversary who cannot influence the device's DNS traffic cannot trigger the fault. Publicly available exploit code exists per the Zephyr GHSA advisory, though the vulnerability is not confirmed actively exploited (no CISA KEV listing) and the EPSS score is low at 0.05% (17th percentile). Our independent assessment agrees on the network/unauthenticated/High-integrity/High-availability profile but rates confidentiality impact Low rather than High.

Buffer Overflow Memory Corruption Zephyr +1
NVD GitHub
EPSS 0% CVSS 8.8
HIGH PATCH This Week

Google Chrome versions before 145.0.7632.159 contain a heap buffer overflow in the WebCodecs component that enables remote attackers to write data outside allocated memory bounds through malicious HTML pages. An unauthenticated attacker can exploit this vulnerability with minimal user interaction to achieve arbitrary code execution on affected systems. A patch is available in Chrome 145.0.7632.159 and later.

Buffer Overflow Chrome Google +2
NVD
EPSS 0% CVSS 7.7
HIGH This Week

Cisco Secure Firewall ASA and FTD devices are vulnerable to a denial of service attack through the Remote Access SSL VPN feature, where authenticated attackers can trigger unvalidated input processing in the Lua interpreter to force device reloads. The vulnerability stems from insufficient input validation in the Lua interpreter and can be exploited by sending specially crafted HTTP packets over an existing VPN connection. No patch is currently available for this HIGH severity issue (CVSS 7.7).

Buffer Overflow Denial Of Service Cisco +2
NVD VulDB
EPSS 0% CVSS 7.1
HIGH PATCH This Week

Local privilege escalation in Linux kernel f2fs sysfs attributes allows unprivileged users to trigger out-of-bounds memory access and cause denial of service by writing oversized integer values to filesystem control interfaces. The vulnerability stems from improper bounds checking when mapping sysfs attributes to kernel structures of varying integer sizes, enabling attackers to corrupt kernel memory and crash the system. No patch is currently available for this vulnerability.

Buffer Overflow Information Disclosure Linux +3
NVD VulDB
EPSS 0% CVSS 7.8
HIGH POC PATCH This Week

F2FS swapfile memory corruption in Linux kernel 6.6+ allows local attackers with user privileges to cause data corruption through improper physical block mapping when using fragmented swapfiles smaller than the F2FS section size. Public exploit code exists for this vulnerability, and attackers can trigger dm-verity corruption errors or F2FS node corruption leading to system crashes and data loss. No patch is currently available.

Buffer Overflow Linux Google +5
NVD GitHub VulDB
EPSS 0% CVSS 8.4
HIGH POC PATCH This Week

Out-of-bounds heap write in OpenEXR's CompositeDeepScanLine::readPixels lets a crafted multi-part deep-scanline EXR file corrupt memory when parsed by an application that links the library. Attacker-controlled per-part sample counts are accumulated into 32-bit total_sizes entries that wrap modulo 2^32, yielding an undersized overall_sample_count used to size the composite sample buffer, while decode setup and generic_unpack_deep_pointers in core unpack consume the true (larger) counts and write past the buffer. Publicly available exploit code exists, but EPSS exploitation probability is very low (0.01%, 2nd percentile) and it is not listed in CISA KEV, so no public evidence of active exploitation exists at time of analysis.

Buffer Overflow Memory Corruption Openexr
NVD GitHub VulDB
EPSS 0% CVSS 9.3
CRITICAL Act Now

Local privilege escalation in Portwell Engineering Toolkits 4.8.2 stems from a kernel driver that exposes unchecked arbitrary memory read/write primitives to authenticated users. An attacker already logged onto an affected industrial/embedded host can corrupt kernel memory to elevate to SYSTEM-level control or crash the machine. No public exploit has been identified and the EPSS score is very low (0.02%, 3rd percentile), indicating no current evidence of opportunistic exploitation; this was reported through CISA's ICS-CERT rather than via observed in-the-wild activity.

Buffer Overflow Engineering Toolkits
NVD GitHub VulDB
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

Buffer overflow in Tenda AC15V1.0 via formSetMacFilterCfg. PoC available.

Buffer Overflow Tenda Ac15 Firmware
NVD GitHub
EPSS 0% CVSS 9.8
CRITICAL POC PATCH Act Now

Heap overflow in libbiosig 3.9.2 Intan CLP parsing. PoC available.

Buffer Overflow Heap Overflow Libbiosig +1
NVD
EPSS 0% CVSS 8.1
HIGH POC PATCH This Week

Arbitrary code execution in libbiosig 3.9.2 and Master Branch can be triggered by parsing malicious Nicolet WFT files through a heap buffer overflow in the WFT parsing functionality. An attacker can exploit this vulnerability by supplying a crafted .wft file to execute arbitrary code on affected systems. Public exploit code exists for this vulnerability, though no patch is currently available.

Buffer Overflow Heap Overflow Libbiosig +1
NVD
EPSS 0% CVSS 7.2
HIGH This Week

WatchGuard Fireware OS contains an out-of-bounds write vulnerability in its management interface that permits authenticated administrators to achieve root-level code execution. The flaw affects versions 11.9 through 11.12.4_Update1, 12.0 through 12.11.7, and 2025.1 through 2026.1.1, with no patch currently available. While exploitation requires high-level administrative privileges, successful attacks grant complete system compromise.

RCE Buffer Overflow Fireware +1
NVD
EPSS 0% CVSS 8.1
HIGH POC PATCH This Week

Out-of-bounds read in Exiv2's CRW image parser allows remote attackers to cause denial of service and potentially disclose sensitive memory contents through crafted image files. Versions prior to 0.28.8 are affected, and public exploit code exists for this vulnerability. A patch is available that administrators should deploy immediately to prevent exploitation.

Buffer Overflow Information Disclosure Red Hat +2
NVD GitHub
EPSS 0% CVSS 8.4
HIGH This Week

Local privilege escalation in Android's DRM manager service allows unprivileged processes to achieve system-level access through an out-of-bounds memory write in the IDrmManagerService transaction handler. The vulnerability requires no user interaction and can be exploited immediately upon execution, making it a direct path to elevated privileges on affected Android devices. No patch is currently available.

Privilege Escalation Buffer Overflow Google +1
NVD
EPSS 0% CVSS 9.8
CRITICAL Act Now

Android has a heap buffer overflow in multiple locations enabling privilege escalation through out-of-bounds read and write operations.

RCE Buffer Overflow Google +1
NVD
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

Tenda W20E has a ninth buffer overflow in yet another CGI endpoint.

Buffer Overflow Tenda W20e Firmware
NVD GitHub
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

Tenda W20E has an eighth buffer overflow in addDhcpRules parameter.

Buffer Overflow Tenda W20e Firmware
NVD GitHub
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

Tenda W20E has a seventh buffer overflow in gstup parameter handling.

Buffer Overflow Tenda W20e Firmware
NVD GitHub
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

Tenda W20E has a sixth buffer overflow in pPortMapIndex parameter validation.

Buffer Overflow Tenda W20e Firmware
NVD GitHub
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

Tenda W20E has a fifth buffer overflow.

Buffer Overflow Tenda W20e Firmware
NVD GitHub
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

Tenda W20E has a fourth buffer overflow vulnerability.

Buffer Overflow Tenda W20e Firmware
NVD GitHub
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

Tenda W20E has a third buffer overflow in a different CGI parameter.

Buffer Overflow Tenda W20e Firmware
NVD GitHub
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

Tenda W20E has a buffer overflow — second of eight critical vulnerabilities in this router firmware.

Buffer Overflow Tenda W20e Firmware
NVD GitHub
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda AC15 firmware versions up to 15.13.07.13 via a stack-based buffer overflow in the /goform/TextEditingConversion endpoint allows unauthenticated attackers to achieve complete system compromise. Public exploit code exists for this vulnerability, and no patch is currently available, creating immediate risk for deployed devices. An attacker can exploit this remotely with minimal complexity by manipulating the wpapsk_crypto2_4g parameter.

Buffer Overflow Stack Overflow Tenda +1
NVD VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda F453 firmware versions 1.0.0.3 and earlier results from a buffer overflow in the httpd component's DHCP configuration handler. An authenticated attacker can exploit this vulnerability over the network to achieve complete system compromise, and public exploit code is currently available.

Buffer Overflow Tenda F453 Firmware
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Buffer overflow in Tenda F453 firmware versions 1.0.0.3 allows authenticated remote attackers to achieve full system compromise through malicious wanmode or PPPOEPassword parameters sent to the httpd service. Public exploit code exists for this vulnerability, and no patch is currently available. An attacker can exploit this to execute arbitrary code with complete control over confidentiality, integrity, and availability of affected devices.

Buffer Overflow Tenda F453 Firmware
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda F453 Firmware 1.0.0.3 allows authenticated attackers to execute arbitrary code via a buffer overflow in the L7Im web interface parameter handler. Public exploit code exists for this vulnerability, and no patch is currently available. An attacker with network access and valid credentials can achieve complete system compromise including data theft, modification, and service disruption.

Buffer Overflow Tenda F453 Firmware
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda F453 1.0.0.3 DNS firmware via a buffer overflow in the /goform/SetIpBind endpoint allows authenticated attackers to achieve full system compromise. The vulnerability stems from improper input validation of the page parameter and has public exploit code available. An attacker with network access and valid credentials can execute arbitrary code with complete system privileges.

Buffer Overflow DNS Tenda +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda F453 Firmware 1.0.0.3 allows authenticated attackers to achieve complete system compromise through a buffer overflow in the QoS settings parameter. Public exploit code exists for this vulnerability, and no patch is currently available, leaving affected devices at immediate risk.

Buffer Overflow Tenda F453 Firmware
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Buffer overflow in Tenda F453 1.0.0.3 firmware allows authenticated remote attackers to achieve complete system compromise through manipulation of the SafeUrlFilter page parameter. Public exploit code exists for this vulnerability, and no patch is currently available. An attacker with valid credentials can execute arbitrary code with full system privileges.

Buffer Overflow Tenda F453 Firmware
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda F453 firmware (v1.0.0.3) via a buffer overflow in the SafeMacFilter function allows authenticated attackers to execute arbitrary code with full system privileges. The vulnerability stems from insufficient input validation on the page parameter in the /goform/SafeMacFilter endpoint and can be exploited remotely over the network. Public exploit code exists and no patch is currently available.

Buffer Overflow Tenda F453 Firmware
NVD GitHub VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Heap memory corruption in the OCaml runtime (before 4.14.3 and 5.x before 5.4.1) lets an attacker who can feed crafted Marshal-format data into an application's deserialization path read past buffer bounds and, through a multi-phase chain, achieve code execution. The flaw lives in the readblock() routine of runtime/intern.c, which copies blocks using attacker-controlled lengths without bounds checks. There is no public exploit identified at time of analysis and EPSS is very low (0.04%), but multiple vendors (SUSE, Red Hat) have shipped fixed packages.

RCE Buffer Overflow Deserialization +1
NVD GitHub
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda F453 firmware allows authenticated attackers to achieve complete system compromise through a buffer overflow in the httpd address NAT function. Public exploit code exists for this vulnerability, and no patch is currently available, leaving affected devices at immediate risk.

Buffer Overflow Tenda F453 Firmware
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda F453 firmware through a buffer overflow in the L7Prot HTTP handler allows unauthenticated attackers to achieve full system compromise via a malicious page parameter. Public exploit code exists for this vulnerability, increasing the risk of widespread attacks. No patch is currently available, leaving affected devices vulnerable until firmware updates are released.

Buffer Overflow Tenda F453 Firmware
NVD GitHub VulDB
EPSS 0% CVSS 9.8
CRITICAL Act Now

Stack-based buffer overflow in ThinkWise by SimTech Systems allows unauthenticated remote code execution via crafted network input.

Buffer Overflow Stack Overflow Thinkwise
NVD VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda F453 firmware version 1.0.0.3 allows authenticated attackers to execute arbitrary code via a buffer overflow in the wireless security settings endpoint. The vulnerability exists in the httpd component's formWrlsafeset function and can be triggered through manipulation of the mit_ssid_index parameter. Public exploit code is available and no patch has been released.

Buffer Overflow Tenda F453 Firmware
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Unauthenticated remote attackers can execute arbitrary code on Tenda F453 devices running firmware 1.0.0.3 by exploiting a stack buffer overflow in the DHCP list client function through the httpd service. Public exploit code exists for this vulnerability and no patch is currently available. The attack requires network access but no user interaction, making it trivial to exploit.

Buffer Overflow Tenda F453 Firmware
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Remote code execution in Tenda F453 firmware through a buffer overflow in the P2pListFilter HTTP handler allows authenticated attackers to achieve complete system compromise. Public exploit code exists for this vulnerability, creating immediate risk for deployed devices. No patch is currently available, leaving affected systems vulnerable to exploitation.

Buffer Overflow Tenda F453 Firmware
NVD GitHub VulDB
EPSS 0% CVSS 7.5
HIGH This Week

Heap buffer overflow in Crypt::SysRandom::XS before version 0.010 allows denial of service through negative length parameter validation bypass in the random_bytes() function. When negative values are passed to the function, integer wraparound causes incorrect memory allocation and unbounded writes to heap memory, triggering application crashes. Exploitation requires attacker control over the length argument, which in typical usage is hardcoded, limiting practical attack scenarios.

Buffer Overflow Denial Of Service Memory Corruption +2
NVD
EPSS 0% CVSS 7.2
HIGH This Week

Heap-based buffer overflow in Golioth Pouch 0.1.0 (prior to commit 1b2219a1) lets an adjacent, unauthenticated BLE client corrupt device memory through the GATT server-certificate characteristic. The server_cert_write() handler sizes a heap buffer once on the first fragment but appends later fragments with memcpy() and no bounds check, so an oversized fragmented write overflows the allocation, crashing the device and potentially corrupting adjacent heap data. EPSS is negligible (0.01%, 3rd percentile) and there is no public exploit identified at time of analysis, but the flaw is remotely reachable within BLE range without credentials.

Buffer Overflow Heap Overflow
NVD GitHub VulDB
EPSS 0% CVSS 7.8
HIGH POC PATCH This Week

Stack buffer overflow in GPAC's NHML file parser (versions up to 26.02.0) allows local attackers to achieve code execution by crafting malicious XML files with oversized xmlHeaderEnd attributes that bypass length validation. The vulnerability stems from unsafe use of strcpy() in src/filters/dmx_nhml.c and affects systems processing untrusted NHML files. Public exploit code exists for this vulnerability, though a patch is available.

Buffer Overflow Gpac
NVD GitHub
EPSS 0% CVSS 8.1
HIGH POC PATCH This Week

Buffer overflow in parallel HNSW index build in pgvector 0.6.0 versions up to 0.8.1 is affected by integer underflow (CVSS 8.1).

Buffer Overflow Denial Of Service Red Hat +2
NVD GitHub
EPSS 0% CVSS 8.8
HIGH POC PATCH This Week

FreeRDP is a free implementation of the Remote Desktop Protocol. [CVSS 8.8 HIGH]

Buffer Overflow Memory Corruption Freerdp
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC PATCH This Week

FreeRDP is a free implementation of the Remote Desktop Protocol. [CVSS 8.8 HIGH]

Buffer Overflow Memory Corruption Freerdp
NVD GitHub VulDB
EPSS 0% CVSS 7.5
HIGH POC PATCH This Week

FreeRDP is a free implementation of the Remote Desktop Protocol. [CVSS 7.5 HIGH]

Buffer Overflow Information Disclosure Red Hat +2
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Buffer overflow in Tenda F453 firmware httpd SafeEmailFilter function allows authenticated remote attackers to achieve complete system compromise through manipulation of the page parameter. Public exploit code exists for this vulnerability, and no patch is currently available. An attacker with valid credentials can execute arbitrary code with full system privileges (read, write, execute).

Buffer Overflow Tenda F453 Firmware
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH POC This Week

Unauthenticated attackers can exploit a buffer overflow in the Tenda F453 firmware's NatStaticSetting endpoint to achieve remote code execution by manipulating the page parameter. Public exploit code is available and actively being leveraged in the wild. No patch is currently available, leaving affected devices vulnerable.

Buffer Overflow Tenda F453 Firmware
NVD GitHub VulDB
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Quick Facts

Typical Severity
HIGH
Category
memory
Total CVEs
41349

MITRE ATT&CK

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