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Heap Overflow

memory HIGH

A heap overflow occurs when a program writes data beyond the bounds of a buffer allocated in the heap memory region.

How It Works

A heap overflow occurs when a program writes data beyond the bounds of a buffer allocated in the heap memory region. Unlike stack overflows that target the call stack, heap overflows corrupt dynamically allocated memory managed by functions like malloc() or new. When a program allocates heap memory without properly validating input size, an attacker can supply excessive data that spills into adjacent heap chunks, corrupting heap metadata structures or neighboring objects.

Exploitation typically targets heap management metadata (chunk headers containing size and status information) or data in adjacent allocations. Attackers can overwrite function pointers stored in heap objects, C++ vtable pointers, or critical data fields to redirect program execution. Modern heap implementations use inline metadata, making them vulnerable to carefully crafted overflows that manipulate allocation structures to achieve arbitrary write primitives.

The attack difficulty varies by heap implementation. Attackers must understand the specific allocator's layout (glibc malloc, Windows heap, etc.) and often need information leaks to defeat ASLR. Heap feng shui techniques arrange heap allocations in predictable patterns, placing attacker-controlled data adjacent to target objects to maximize exploitation reliability.

Impact

  • Arbitrary code execution: Overwrite function pointers or vtables to redirect control flow to attacker-supplied shellcode
  • Memory corruption: Corrupt critical data structures, causing crashes or logic manipulation to bypass security checks
  • Privilege escalation: Modify authorization flags or user context stored in heap objects
  • Information disclosure: Trigger controlled crashes that leak sensitive data through error messages or core dumps
  • Heap spray payloads: Combined with other vulnerabilities, create reliable exploitation paths across multiple platforms

Real-World Examples

The WhatsApp video call vulnerability (CVE-2019-11931) exploited a heap overflow in video decoding, allowing remote code execution through a malicious video file without user interaction. Attackers could compromise devices by simply calling targets.

The OpenSSL Heartbleed bug (CVE-2014-0160), while primarily an information disclosure issue, demonstrated heap-related vulnerabilities by allowing attackers to read arbitrary heap memory. Similar heap overflow issues in TLS implementations have enabled complete server compromise.

The sudo heap overflow (CVE-2021-3156) allowed local privilege escalation on Unix systems by overflowing a heap buffer through carefully crafted command-line arguments, giving unprivileged users root access on affected systems.

Mitigation

  • Memory-safe languages: Use Rust, Go, or managed languages that eliminate manual memory management vulnerabilities
  • Hardened heap allocators: Deploy jemalloc, PartitionAlloc, or Scudo with guard pages and randomization features
  • Address Space Layout Randomization (ASLR): Randomize heap base addresses to make exploitation non-deterministic
  • Bounds checking: Validate all input sizes before heap operations and use safe string functions (strncpy, snprintf)
  • Heap integrity checks: Enable heap consistency verification in production environments
  • Compiler mitigations: Use AddressSanitizer during development and fortify source options at compile time
  • Size limits: Enforce maximum allocation sizes and reject excessive input

Recent CVEs (666)

EPSS 0% CVSS 7.1
HIGH PATCH This Week

HTSlib versions prior to 1.21.1, 1.22.2, and 1.23.1 contain an out-by-one error in the CRAM decoder's `cram_byte_array_stop_decode_char()` function that allows a single attacker-controlled byte to be written beyond the end of a heap allocation. This heap buffer overflow (CWE-122) affects bioinformatics applications using HTSlib to process CRAM-formatted DNA sequence alignment files, and could enable arbitrary code execution if exploited. No public exploit code or KEV status is currently documented, but patch availability exists for multiple stable release branches.

RCE Buffer Overflow Denial Of Service +3
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH PATCH This Week

HTSlib contains a buffer overflow vulnerability in its CRAM format decoder affecting the VARINT and CONST encoding handlers, where incomplete context validation allows writes of up to eight bytes beyond heap allocation boundaries or into stack-allocated single-byte variables. This vulnerability affects HTSlib versions prior to 1.23.1, 1.22.2, and 1.21.1, and impacts any application using the library to process CRAM-formatted bioinformatics data files. An attacker can craft a malicious CRAM file to trigger heap or stack overflow conditions, potentially leading to denial of service, memory corruption, or arbitrary code execution when processed by a vulnerable application.

RCE Buffer Overflow Denial Of Service +5
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH PATCH This Week

HTSlib contains a heap buffer overflow vulnerability in its CRAM decoder caused by an out-by-one error when validating feature boundaries. When a user opens a maliciously crafted CRAM file, an attacker can write one controlled byte beyond the end of a heap buffer, potentially causing application crashes, data corruption, or arbitrary code execution. Versions 1.23.1, 1.22.2, and 1.21.1 include fixes, and patches are available via the official GitHub repository.

RCE Buffer Overflow Denial Of Service +4
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH PATCH This Week

HTSlib versions prior to 1.23.1, 1.22.2, and 1.21.1 contain a heap buffer overflow vulnerability in the cram_decode_seq() function when processing CRAM-formatted bioinformatics files with omitted sequence and quality data. An attacker can craft a malicious CRAM file that triggers an out-of-bounds read followed by an attacker-controlled single-byte write to heap memory, potentially enabling arbitrary code execution, data corruption, or denial of service when a user opens the file. No public exploit proof-of-concept has been identified, but the vulnerability is confirmed and patched by the HTSlib project.

RCE Buffer Overflow Denial Of Service +5
NVD GitHub VulDB
EPSS 0% CVSS 9.1
CRITICAL PATCH Act Now

A critical heap buffer overflow vulnerability exists in YAML::Syck through version 1.36 for Perl, allowing remote attackers to potentially execute arbitrary code or cause denial of service without authentication. The vulnerability stems from multiple memory corruption issues including heap overflow when processing YAML class names exceeding 512 bytes, buffer overread in base64 decoding, and memory leaks. With a CVSS score of 9.1 and network-based attack vector requiring no user interaction, this presents a severe risk to applications parsing untrusted YAML input.

Buffer Overflow Heap Overflow Red Hat +1
NVD GitHub VulDB
EPSS 0% CVSS 7.7
HIGH This Week

Heap-based buffer overflow vulnerability in Softing Industrial Automation GmbH smartLink SW-PN and smartLink SW-HT (Webserver modules) allows overflow buffers.This issue affects: smartLink SW-PN: through 1.03 smartLink SW-HT: through 1.42

Buffer Overflow Heap Overflow
NVD VulDB
EPSS 0% CVSS 8.8
HIGH PATCH This Week

Heap-based buffer overflow vulnerability in the DnsServer component of Tuya's arduino-TuyaOpen library (versions before 1.2.1) that allows attackers on the same LAN to execute arbitrary code on IoT/embedded devices by sending malicious DNS responses. With a CVSS score of 8.8 and tags indicating RCE capability, this represents a significant risk for connected embedded devices, though no active exploitation (not in KEV) or public PoC has been identified.

RCE Buffer Overflow Heap Overflow +1
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH PATCH This Week

Heap-based buffer overflow vulnerability in GStreamer's rtpqdm2depay component that allows remote attackers to execute arbitrary code when processing malformed X-QDM RTP payloads. The vulnerability affects all versions of GStreamer (CPE indicates no version restrictions) and requires user interaction to exploit, though attack vectors may vary based on implementation. No active exploitation is known (not in KEV), and no EPSS score is available to assess real-world exploitation probability.

RCE Buffer Overflow Heap Overflow +3
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Heap-based buffer overflow vulnerability in the GStreamer multimedia framework's JPEG parser that allows remote code execution when processing malicious Huffman tables. The vulnerability affects all versions of GStreamer (CPE shows wildcard versioning) and requires user interaction to exploit, with a CVSS score of 7.8. No active exploitation in the wild has been reported (not in KEV), and no EPSS data is available.

RCE Buffer Overflow Heap Overflow +3
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Heap-based buffer overflow vulnerability in GStreamer's ASF Demuxer component that allows remote attackers to execute arbitrary code when processing malicious ASF media files. The vulnerability requires user interaction (opening/processing a malicious file) and affects all versions of GStreamer based on the CPE data. No evidence of active exploitation (not in KEV) or public proof-of-concept exists, though Zero Day Initiative tracked it as ZDI-CAN-28843.

RCE Buffer Overflow Heap Overflow +3
NVD VulDB
EPSS 0% CVSS 8.0
HIGH This Week

Heap-based buffer overflow vulnerability in Philips Hue Bridge devices that allows network-adjacent attackers to execute arbitrary code through malformed PUT requests to the HomeKit Accessory Protocol (HAP) characteristics endpoint. While authentication is normally required, the advisory notes the authentication mechanism can be bypassed, effectively allowing unauthenticated remote code execution. No EPSS score or KEV listing is available, suggesting this is not currently being exploited in the wild.

RCE Buffer Overflow Heap Overflow
NVD
EPSS 0% CVSS 8.8
HIGH This Week

Heap-based buffer overflow vulnerability in Philips Hue Bridge's HomeKit implementation that allows unauthenticated network-adjacent attackers to execute arbitrary code. The vulnerability affects all versions of Philips Hue Bridge (CPE indicates no version restrictions) through the hk_hap_pair_storage_put function on TCP port 8080. No EPSS data or KEV listing is available, and while ZDI has published an advisory, no public POC or active exploitation has been reported.

RCE Buffer Overflow Heap Overflow
NVD
EPSS 0% CVSS 8.0
HIGH This Week

Heap-based buffer overflow vulnerability in Philips Hue Bridge devices that allows network-adjacent attackers with authentication (which can be bypassed) to achieve remote code execution as root. The vulnerability affects the HomeKit Accessory Protocol (HAP) implementation on TCP port 8080 and has a high CVSS score of 8.0, though no active exploitation or public PoC has been reported.

RCE Buffer Overflow Heap Overflow
NVD
EPSS 0% CVSS 8.8
HIGH This Week

Critical heap-based buffer overflow vulnerability in Philips Hue Bridge's HomeKit implementation that allows network-adjacent attackers to execute arbitrary code without authentication. The vulnerability affects all versions of Philips Hue Bridge (CPE indicates no version restriction) and stems from improper input validation in the hk_hap_pair_storage_put function. No active exploitation (not in KEV) or EPSS score is reported, but the high CVSS score (8.8) and RCE capability make this a significant threat for local network attackers.

RCE Buffer Overflow Heap Overflow
NVD
EPSS 0% CVSS 8.0
HIGH This Week

Heap-based buffer overflow vulnerability in the Philips Hue Bridge's Zigbee stack that allows network-adjacent attackers to execute arbitrary code when users initiate device pairing. The vulnerability affects all versions of Philips Hue Bridge and has a CVSS score of 8.0, requiring physical proximity and user interaction to exploit. No EPSS data or KEV listing is available, suggesting this is not actively exploited in the wild.

RCE Buffer Overflow Heap Overflow
NVD
EPSS 0% CVSS 9.8
CRITICAL PATCH Act Now

Heap overflow in FreeRDP gdi_surface_bits() before 3.24.0.

Buffer Overflow Heap Overflow Red Hat +2
NVD GitHub VulDB
EPSS 0% CVSS 6.5
MEDIUM This Month

Heap buffer overflow vulnerability in LibreDWG versions v0.13.3.7571 up to v0.13.3.7835 allows a crafted DWG file to cause a Denial of Service (DoS) via the function decompress_R2004_section at decode.c.

Buffer Overflow Denial Of Service Heap Overflow +1
NVD GitHub
EPSS 0% CVSS 7.8
HIGH This Week

Local attackers can achieve heap buffer overflow in llama.cpp versions before b8146 through integer overflow in the GGUF file parsing function, enabling arbitrary code execution with high integrity and confidentiality impact. The vulnerability stems from undersized heap allocation followed by unvalidated writes of over 528 bytes of attacker-controlled data, bypassing a previous fix for the same component. This affects systems running vulnerable LLM inference implementations on local machines where user interaction is required to trigger the malicious GGUF file processing.

Buffer Overflow Heap Overflow
NVD GitHub VulDB
EPSS 0% CVSS 8.8
HIGH PATCH This Week

Heap buffer overflow in Skia in Google Chrome versions up to 146.0.7680.71 is affected by heap-based buffer overflow (CVSS 8.8).

Buffer Overflow Chrome Google +3
NVD VulDB
EPSS 0% CVSS 8.8
HIGH PATCH This Week

Heap buffer overflow in WebML in Google Chrome versions up to 146.0.7680.71 is affected by heap-based buffer overflow (CVSS 8.8).

Buffer Overflow Chrome Google +4
NVD VulDB
EPSS 0% CVSS 8.8
HIGH PATCH This Week

Heap buffer overflow in WebML in Google Chrome versions up to 146.0.7680.71 is affected by heap-based buffer overflow (CVSS 8.8).

Buffer Overflow Chrome Google +4
NVD VulDB
EPSS 0% CVSS 5.7
MEDIUM PATCH This Month

ImageMagick is free and open-source software used for editing and manipulating digital images. versions up to 7.1.2-16 is affected by heap-based buffer overflow (CVSS 5.7).

Buffer Overflow Heap Overflow Red Hat +2
NVD GitHub VulDB
EPSS 0% CVSS 7.8
HIGH This Week

Heap buffer overflow in Adobe Illustrator 29.8.4 and 30.1 allows arbitrary code execution under the current user's privileges when opening a malicious file. The vulnerability requires user interaction but carries no patch availability, leaving affected systems at risk. An attacker can achieve code execution by crafting and distributing a malicious document that triggers the memory corruption flaw.

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

Firefox for Android versions prior to 148.0.2 contain a heap buffer overflow in the audio/video playback component that allows remote code execution, information disclosure, and denial of service through a malicious media file requiring user interaction. The vulnerability affects all Firefox for Android users and currently lacks a publicly available patch. An attacker can achieve complete system compromise by crafting a specially crafted video or audio file that triggers the buffer overflow when played.

Buffer Overflow Google Heap Overflow +1
NVD VulDB
EPSS 0% CVSS 7.8
HIGH This Week

iccDEV provides a set of libraries and tools for working with ICC color management profiles. versions up to 2.3.1.5 is affected by heap-based buffer overflow (CVSS 7.8).

Buffer Overflow Heap Overflow Iccdev
NVD GitHub VulDB
EPSS 0% CVSS 6.1
MEDIUM This Month

iccDEV provides a set of libraries and tools for working with ICC color management profiles. versions up to 2.3.1.5 is affected by heap-based buffer overflow (CVSS 6.1).

Buffer Overflow Heap Overflow Iccdev
NVD GitHub VulDB
EPSS 0% CVSS 8.0
HIGH POC PATCH This Week

Remote code execution in Windows RRAS across Server 2016, 2022, and 2025 via an integer overflow vulnerability allows authenticated attackers to execute arbitrary code over the network with high privileges. Public exploit code exists for this vulnerability, and no patch is currently available. Authenticated users with network access can trigger the vulnerability through a simple interaction to gain complete system compromise.

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

Heap buffer overflow in Microsoft Office Excel enables local code execution with high integrity and confidentiality impact affecting Office, Office Online Server, and 365 Apps. An attacker with user interaction can achieve arbitrary code execution in the context of the affected application. No patch is currently available for this vulnerability.

Buffer Overflow Heap Overflow Microsoft +5
NVD
EPSS 0% CVSS 8.8
HIGH PATCH This Week

Privilege escalation in Windows Telephony Service through heap buffer overflow affects Windows 10 1607, Windows 11 25h2, and Windows Server 2012, allowing adjacent network attackers to gain elevated system access without authentication. The vulnerability has a high CVSS score of 8.8 but currently lacks a patch, creating significant risk for exposed systems. Exploitation requires network proximity but no user interaction.

Windows Buffer Overflow Heap Overflow +15
NVD VulDB
EPSS 0% CVSS 8.0
HIGH POC PATCH This Week

Remote code execution in Windows RRAS affects Windows 10 1607 and Windows Server 2022 23h2 through an integer overflow vulnerability exploitable by authenticated network attackers. Public exploit code exists for this vulnerability, enabling authenticated users to execute arbitrary code with high integrity and confidentiality impact. No patch is currently available, making this a critical exposure for affected Windows environments.

Windows Buffer Overflow Heap Overflow +15
NVD VulDB GitHub
EPSS 0% CVSS 8.0
HIGH POC PATCH This Week

Remote code execution in Windows Routing and Remote Access Service (RRAS) across Windows Server 2012, 2022, and 2022 23h2 stems from an integer overflow vulnerability that authenticated network attackers can exploit with user interaction. Public exploit code exists for this vulnerability, enabling attackers to achieve arbitrary code execution with high impact on confidentiality, integrity, and availability. No patch is currently available.

Windows Buffer Overflow Heap Overflow +7
NVD VulDB GitHub
EPSS 0% CVSS 6.8
MEDIUM PATCH This Month

Arbitrary code execution in Windows 10 (versions 21H2 and 22H2) via heap buffer overflow in Mobile Broadband functionality requires physical access to a target device. An attacker with direct hardware access can trigger memory corruption to achieve kernel-level code execution with full system privileges. No patch is currently available for this vulnerability.

Windows Buffer Overflow Heap Overflow +3
NVD VulDB
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

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
NVD VulDB
EPSS 0% CVSS 6.8
MEDIUM PATCH This Month

Medium severity vulnerability in ImageMagick. A 32-bit unsigned integer overflow in the XWD (X Windows) encoder can cause an undersized heap buffer allocation. When writing a extremely large image an out of bounds heap write can occur.

Windows Buffer Overflow Heap Overflow +4
NVD GitHub VulDB
EPSS 0% CVSS 6.8
MEDIUM PATCH This Month

Medium severity vulnerability in ImageMagick. A heap-based buffer overflow in the UHDR encoder can happen due to truncation of a value and it would allow an out of bounds write.

Buffer Overflow Heap Overflow Red Hat +2
NVD GitHub VulDB
EPSS 0% CVSS 9.8
CRITICAL Act Now

Insecure embedded library in UnQLite 0.06 Perl module.

Heap Overflow Unqlite
NVD
EPSS 0% CVSS 7.3
HIGH POC PATCH This Week

Heap buffer overflow in dr_libs 0.14.4 and earlier allows attackers to corrupt memory by supplying maliciously crafted WAV files to any application using drwav_init_*_with_metadata() functions. The vulnerability exploits inconsistent validation of sample loop counts between processing passes, enabling 36 bytes of attacker-controlled data to overflow heap allocations. Public exploit code exists for this vulnerability.

Buffer Overflow Heap Overflow Suse
NVD GitHub VulDB
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

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

Buffer Overflow Heap Overflow Libbiosig
NVD
EPSS 0% CVSS 8.1
HIGH POC 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
NVD
EPSS 0% CVSS 4.4
MEDIUM POC PATCH This Month

Vim versions prior to 9.2.0076 contain a heap buffer overflow and out-of-bounds read vulnerability in the terminal emulator when handling Unicode combining characters from supplementary planes, allowing a local attacker with user interaction to cause memory corruption and denial of service. The vulnerability requires local access and user interaction to trigger, with no confidentiality impact but potential integrity and availability consequences. A patch is available in version 9.2.0076 and later.

Buffer Overflow Heap Overflow Red Hat +2
NVD GitHub VulDB
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

Vim versions prior to 9.2.0075 contain a heap buffer underflow in the tags file parser that triggers when processing malformed tag files with delimiters at line starts, potentially allowing local attackers with user interaction to read out-of-bounds memory and cause information disclosure or crashes. The vulnerability requires local file system access and user interaction to exploit, with a CVSS score of 5.3 indicating medium severity. A patch is available in Vim 9.2.0075 and later versions.

Heap Overflow Red Hat Vim +1
NVD GitHub VulDB
EPSS 0% CVSS 4.4
MEDIUM PATCH This Month

Vim versions prior to 9.2.0074 contain a heap buffer overflow in the Emacs-style tags file parser that allows reading up to 7 bytes of out-of-bounds memory when processing malformed tags files. A local attacker can trigger this vulnerability through a crafted tags file to leak sensitive information from the application's memory. The vulnerability has been patched in version 9.2.0074 and later.

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

Golioth Pouch versions prior to commit 1b2219a1 suffer from a heap buffer overflow in BLE GATT server certificate handling that fails to validate fragment sizes during assembly, allowing unauthenticated adjacent attackers to trigger memory corruption and denial of service. An attacker can send maliciously sized certificate fragments that exceed the allocated buffer capacity, causing heap overflow conditions that crash the application and potentially corrupt adjacent memory structures. No patch is currently available for this vulnerability.

Buffer Overflow Denial Of Service Memory Corruption +1
NVD GitHub
EPSS 0% CVSS 7.5
HIGH This Week

Heap buffer over-read vulnerability in rldns DNS server version 1.3 allows remote attackers to trigger denial of service without authentication or user interaction. The flaw enables reading beyond allocated memory boundaries, causing the service to crash. Version 1.4 addresses this issue, though no patch is currently available for affected 1.3 deployments.

Denial Of Service Heap Overflow DNS
NVD GitHub
EPSS 0% CVSS 7.5
HIGH POC PATCH This Week

free5GC go-upf is the User Plane Function (UPF) implementation for 5G networks that is part of the free5GC project. Versions prior to 1.2.8 have a Heap-based Buffer Overflow (CWE-122) vulnerability leading to Denial of Service. [CVSS 7.5 HIGH]

Buffer Overflow Denial Of Service Heap Overflow +1
NVD GitHub
EPSS 0% CVSS 7.2
HIGH PATCH This Week

A flaw was found in the 389-ds-base server. A heap buffer overflow vulnerability exists in the `schema_attr_enum_callback` function within the `schema.c` file. [CVSS 7.2 HIGH]

RCE Buffer Overflow Denial Of Service +1
NVD
EPSS 0% CVSS 8.8
HIGH POC This Week

The SAIL image library contains a heap buffer overflow in its XWD file parser that fails to validate the bytes_per_line value read from untrusted files, allowing attackers to trigger out-of-bounds memory writes during image processing. Public exploit code exists for this vulnerability affecting all versions of SAIL. No patch is currently available, leaving users of this cross-platform image loading library exposed to potential code execution or denial of service attacks.

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

Remote code execution in GIMP through heap buffer overflow during ICNS file parsing allows attackers to execute arbitrary code when a user opens a malicious image file. The vulnerability stems from insufficient validation of user-supplied data lengths before copying to heap memory, requiring only user interaction to trigger. A patch is available for affected installations.

RCE Buffer Overflow Heap Overflow +3
NVD VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

GIMP's ICO file parser fails to properly validate buffer lengths, enabling heap-based buffer overflow when processing malicious image files. An attacker can exploit this vulnerability to achieve remote code execution on affected systems by tricking users into opening specially crafted ICO files. A patch is available to address this high-severity flaw (CVSS 7.8).

RCE Buffer Overflow Heap Overflow +3
NVD VulDB
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

PJSIP versions 2.16 and below contain a heap buffer overflow in the H.264 video unpacketizer that fails to properly validate NAL unit size fields in malformed SRTP packets, allowing remote attackers to trigger memory corruption on systems receiving H.264 video streams. The vulnerability has a CVSS score of 5.3 and enables information disclosure through heap memory access. A patch is available for affected deployments.

Buffer Overflow Github Heap Overflow +2
NVD GitHub
EPSS 0% CVSS 7.8
HIGH POC PATCH This Week

Heap buffer overflow in HDF5 versions prior to 1.14.4-2 allows attackers to trigger denial-of-service or potentially achieve code execution by crafting malicious h5 files. The vulnerability affects any system parsing untrusted HDF5 data files and has public exploit code available. A patch is not yet available, leaving affected deployments at risk.

RCE Buffer Overflow Heap Overflow +3
NVD GitHub
EPSS 0% CVSS 8.8
HIGH PATCH This Week

Heap buffer overflow in libvpx affects Firefox and Thunderbird across multiple versions, enabling remote code execution when a user interacts with malicious content. An unauthenticated attacker can exploit this vulnerability over the network without special privileges to achieve complete system compromise including data theft and integrity violations. No patch is currently available, making this a critical risk for affected users.

Buffer Overflow Heap Overflow Mozilla
NVD
EPSS 0% CVSS 5.5
MEDIUM This Month

InDesign versions 21.1, 20.5.1 and earlier contain a heap buffer overflow that enables local denial-of-service attacks when users open malicious files. An attacker can crash the application to disrupt workflow, though no patch is currently available. User interaction is required for exploitation.

Buffer Overflow Denial Of Service Heap Overflow +2
NVD
EPSS 0% CVSS 7.8
HIGH This Week

Arbitrary code execution in Adobe InDesign versions 21.1, 20.5.1, and earlier through a heap buffer overflow vulnerability triggered by opening a malicious file. The vulnerability requires user interaction and executes with the privileges of the current user, with no patch currently available. Local attackers can leverage this to achieve code execution on affected systems.

Buffer Overflow Heap Overflow Adobe +1
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Privilege escalation in Microsoft Office Excel (including 365 Apps and Long Term Servicing Channel) via heap-based buffer overflow allows local attackers with user interaction to gain elevated system privileges. The vulnerability affects multiple Office product lines and currently lacks a security patch. With a CVSS score of 7.8, this poses a significant risk to organizations using affected Excel versions.

Buffer Overflow Heap Overflow Microsoft +5
NVD
EPSS 0% CVSS 7.3
HIGH POC PATCH This Week

Heap overflow in Windows Hyper-V enables authenticated local users to achieve arbitrary code execution with high privileges on affected Windows and Windows Server systems. An attacker with local access and user-level permissions can trigger memory corruption through user interaction to compromise system integrity and confidentiality. This vulnerability affects Windows 10 1809, Windows Server 2025, and related Hyper-V implementations with no patch currently available.

Windows Buffer Overflow Heap Overflow +14
NVD Exploit-DB VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Privilege escalation in Microsoft Graphics Component on Windows 11 24H2 and Windows 10 21H2 exploits a heap buffer overflow to allow authenticated local attackers to gain system-level access. The vulnerability requires local access and user interaction is not required, presenting a significant risk in multi-user environments. No patch is currently available.

Buffer Overflow Heap Overflow Industrial +14
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Windows Kernel heap overflow in Windows 11 25h2 and Windows Server 2025 enables authenticated local attackers to achieve privilege escalation with high impact on confidentiality, integrity, and availability. The vulnerability requires local access and user privileges but no user interaction, making it a practical attack vector for lateral movement within systems. No patch is currently available, leaving affected systems exposed until remediation is released.

Windows Buffer Overflow Linux +5
NVD
EPSS 0% CVSS 7.3
HIGH POC PATCH This Week

Heap overflow in Windows Hyper-V enables authenticated local users to achieve arbitrary code execution with high privileges (CVSS 7.3). Exploitation requires user interaction and local system access, affecting Windows 10 1809 and Windows Server 2025. No patch is currently available.

Windows Buffer Overflow Heap Overflow +14
NVD Exploit-DB VulDB
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Privilege escalation via heap buffer overflow in Windows Kernel (Windows 10 21H2, Windows Server 2016) allows authenticated local users to gain elevated system privileges. The vulnerability requires local access and user-level permissions, making it exploitable by authorized account holders to bypass security boundaries. No patch is currently available for this issue.

Windows Buffer Overflow Linux +15
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

Windows Ancillary Function Driver for WinSock contains a heap buffer overflow vulnerability that enables authenticated local users to achieve privilege escalation on affected Windows 10 and Server 2012 systems. An attacker with valid user credentials can exploit this memory corruption flaw to execute arbitrary code with elevated privileges. No patch is currently available for this vulnerability.

Windows Buffer Overflow Heap Overflow +14
NVD
EPSS 0% CVSS 7.8
HIGH This Week

Heap-based buffer overflow in Simcenter Femap and Nastran versions prior to V2512 allows local attackers to achieve arbitrary code execution by crafting malicious NDB files. The vulnerability requires user interaction to trigger and affects all current versions of both products. No patch is currently available, leaving affected systems at risk of privilege escalation and system compromise.

Buffer Overflow Heap Overflow Simcenter Femap +1
NVD
EPSS 0% CVSS 7.3
HIGH This Week

Heap-based buffer overflow vulnerability in the image module. Impact: Successful exploitation of this vulnerability may affect availability. [CVSS 7.3 HIGH]

Buffer Overflow Heap Overflow Harmonyos
NVD
EPSS 0%
This Week

A heap-based buffer overflow vulnerability has been identified in the Postscript interpreter in various Lexmark devices. This vulnerability can be leveraged by an attacker to execute arbitrary code as an unprivileged user.

Buffer Overflow Heap Overflow
NVD
EPSS 0% CVSS 8.0
HIGH This Week

Heap-based Buffer Overflow vulnerability in TP-Link Archer AX53 v1.0 (tdpserver modules) allows adjacent attackers to cause a segmentation fault or potentially execute arbitrary code via a specially crafted network packet containing a maliciously formed field.This issue affects Archer AX53 v1.0: through 1.3.1 Build 20241120. [CVSS 8.0 HIGH]

RCE Buffer Overflow Heap Overflow +2
NVD VulDB
EPSS 0% CVSS 8.0
HIGH This Week

Heap-based Buffer Overflow vulnerability in TP-Link Archer AX53 v1.0 (tmpserver modules) allows authenticated adjacent attackers to cause a segmentation fault or potentially execute arbitrary code via a specially crafted network packet containing a field whose length exceeds the maximum expected value.This issue affects Archer AX53 v1.0: through 1.3.1 Build 20241120. [CVSS 8.0 HIGH]

RCE Buffer Overflow Heap Overflow +2
NVD VulDB
EPSS 0% CVSS 8.0
HIGH This Week

Heap-based Buffer Overflow vulnerability in TP-Link Archer AX53 v1.0 (tmpserver modules) allows authenticated adjacent attackers to cause a segmentation fault or potentially execute arbitrary code via a specially crafted network packet whose length exceeds the maximum expected value.This issue affects Archer AX53 v1.0: through 1.3.1 Build 20241120. [CVSS 8.0 HIGH]

RCE Buffer Overflow Heap Overflow +2
NVD VulDB
EPSS 0% CVSS 8.0
HIGH This Week

Heap-based Buffer Overflow vulnerability in TP-Link Archer AX53 v1.0 (tmpserver modules) allows authenticated adjacent attackers to cause a segmentation fault or potentially execute arbitrary code via a specially crafted network packet containing an excessive number of fields with zero‑length values.This issue affects Archer AX53 v1.0: through 1.3.1 Build 20241120. [CVSS 8.0 HIGH]

RCE Buffer Overflow Heap Overflow +2
NVD VulDB
EPSS 0% CVSS 8.0
HIGH This Week

Heap-based Buffer Overflow vulnerability in TP-Link Archer AX53 v1.0 (tmpserver modules) allows authenticated adjacent attackers to cause a segmentation fault or potentially execute arbitrary code via a specially crafted network packet containing an excessive number of fields with zero‑length values.This issue affects Archer AX53 v1.0: through 1.3.1 Build 20241120. [CVSS 8.0 HIGH]

RCE Buffer Overflow Heap Overflow +2
NVD VulDB
EPSS 0% CVSS 8.0
HIGH This Week

Heap-based Buffer Overflow vulnerability in TP-Link Archer AX53 v1.0 (tmpserver modules) allows authenticated adjacent attackers to cause a segmentation fault or potentially execute arbitrary code. [CVSS 8.0 HIGH]

RCE Buffer Overflow Heap Overflow +2
NVD VulDB
EPSS 0% CVSS 8.0
HIGH This Week

Heap-based Buffer Overflow vulnerability in TP-Link Archer AX53 v1.0 (tmpserver modules) allows authenticated adjacent attackers to cause a segmentation fault or potentially execute arbitrary code via a specially crafted network packet containing a field whose length exceeds the maximum expected value.This issue affects Archer AX53 v1.0: through 1.3.1 Build 20241120. [CVSS 8.0 HIGH]

RCE Buffer Overflow Heap Overflow +2
NVD VulDB
EPSS 0% CVSS 8.0
HIGH This Week

Heap-based Buffer Overflow vulnerability in TP-Link Archer AX53 v1.0 (tmpserver modules) allows authenticated adjacent attackers to cause a segmentation fault or potentially execute arbitrary code via a specially crafted network packet whose length exceeds the maximum expected value.This issue affects Archer AX53 v1.0: through 1.3.1 Build 20241120. [CVSS 8.0 HIGH]

RCE Buffer Overflow Heap Overflow +2
NVD VulDB
EPSS 0% CVSS 8.0
HIGH This Week

Heap-based Buffer Overflow vulnerability in TP-Link Archer AX53 v1.0 (tmpserver modules) allows authenticated adjacent attackers to cause a segmentation fault or potentially execute arbitrary code via a specially crafted set of network packets containing an excessive number of host entries This issue affects Archer AX53 v1.0: through 1.3.1 Build 20241120. [CVSS 8.0 HIGH]

RCE Buffer Overflow Heap Overflow +2
NVD VulDB
EPSS 0% CVSS 4.4
MEDIUM PATCH This Month

Rizin versions up to 0.8.2 is affected by allocation of resources without limits or throttling (CVSS 4.4).

Heap Overflow Rizin Suse
NVD GitHub
EPSS 0% CVSS 9.8
CRITICAL PATCH Act Now

Information exposure in vLLM inference engine versions 0.8.3 to before 0.14.1. Invalid image requests to the multimodal endpoint cause sensitive data logging. Patch available.

RCE Heap Overflow Red Hat +2
NVD GitHub
EPSS 0%
Monitor

alsa-lib versions 1.2.2 up to and including 1.2.15.2, prior to commit 5f7fe33, contain a heap-based buffer overflow in the topology mixer control decoder.

Buffer Overflow Denial Of Service Heap Overflow
NVD GitHub
EPSS 0% CVSS 6.5
MEDIUM This Month

Denial-of-service in TeamViewer DEX Client versions prior to 26.1 allows adjacent network attackers to crash the NomadBranch.exe service by sending specially crafted UDP packets that trigger a heap buffer overflow. The vulnerability stems from an integer underflow in the UDP command handler that can be exploited without authentication or user interaction. Currently, no patch is available and the attack requires network adjacency to the affected system.

Windows Buffer Overflow Denial Of Service +3
NVD
EPSS 0% CVSS 6.5
MEDIUM This Month

Heap-based buffer overflow in is-Engine before version 3.3.4 allows remote attackers to cause denial of service through out-of-bounds memory writes. The vulnerability requires user interaction and network access but has no patch currently available. Affected installations should upgrade to version 3.3.4 or later to mitigate this denial of service risk.

Buffer Overflow Heap Overflow
NVD GitHub
EPSS 0%
This Week

Out-of-bounds Write, Heap-based Buffer Overflow vulnerability in ttttupup wxhelper (src modules). This vulnerability is associated with program files mongoose.C.

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

Arbitrary code execution in SOLIDWORKS eDrawings 2025-2026 via heap overflow when parsing malicious EPRT files allows attackers to gain full system compromise upon user interaction. The vulnerability requires local file access and user action to trigger, making it a significant risk for organizations using affected SOLIDWORKS versions. No patch is currently available.

Buffer Overflow Heap Overflow
NVD
EPSS 1% CVSS 9.8
CRITICAL Act Now

ALGO 8180 has a heap-based buffer overflow in InformaCast message processing enabling remote code execution through the emergency notification protocol.

RCE Buffer Overflow Golang +2
NVD
EPSS 0% CVSS 7.8
HIGH PATCH This Week

GIMP PSP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. [CVSS 7.8 HIGH]

RCE Buffer Overflow Heap Overflow +3
NVD
EPSS 0% CVSS 8.1
HIGH PATCH This Week

In the eap-mschapv2 plugin (client-side) in strongSwan before 6.0.3, a malicious EAP-MSCHAPv2 server can send a crafted message of size 6 through 8, and cause an integer underflow that potentially results in a heap-based buffer overflow. [CVSS 8.1 HIGH]

Buffer Overflow Heap Overflow Integer Overflow +2
NVD GitHub
EPSS 0% CVSS 5.5
MEDIUM POC This Month

A heap overflow in the uncv_parse_config() function of GPAC v2.4.0 allows attackers to cause a Denial of Service (DoS) via a crafted MP4 file. [CVSS 5.5 MEDIUM]

Denial Of Service Heap Overflow Gpac
NVD GitHub
EPSS 0% CVSS 5.5
MEDIUM POC This Month

A heap overflow in the ghi_dmx_declare_opid_bin() function of GPAC v2.4.0 allows attackers to cause a Denial of Service (DoS) via a crafted input. [CVSS 5.5 MEDIUM]

Denial Of Service Heap Overflow Gpac
NVD GitHub
EPSS 0% CVSS 6.5
MEDIUM POC This Month

A heap overflow in the avi_parse_input_file() function of GPAC v2.4.0 allows attackers to cause a Denial of Service (DoS) via a crafted AVI file. [CVSS 6.5 MEDIUM]

Denial Of Service Heap Overflow Gpac
NVD GitHub
EPSS 0% CVSS 5.5
MEDIUM POC This Month

A heap overflow in the vorbis_to_intern() function of GPAC v2.4.0 allows attackers to cause a Denial of Service (DoS) via a crafted .ogg file. [CVSS 5.5 MEDIUM]

Denial Of Service Heap Overflow Gpac
NVD GitHub
EPSS 0% CVSS 8.8
HIGH POC PATCH This Week

Memory corruption in iccDEV library versions before 2.3.1.2 allows remote attackers to achieve code execution via maliciously crafted ICC color profiles, affecting users who process untrusted profile data. Public exploit code exists for this vulnerability. Organizations using iccDEV should upgrade to version 2.3.1.2 immediately.

Buffer Overflow Heap Overflow Iccdev
NVD GitHub
EPSS 0% CVSS 7.8
HIGH This Week

Arbitrary code execution in Adobe InDesign versions 21.0, 19.5.5 and earlier via a heap buffer overflow vulnerability when users open malicious files. The flaw requires user interaction but allows attackers to execute code with the privileges of the current user. No patch is currently available for this high-severity issue.

Buffer Overflow Heap Overflow Adobe +1
NVD
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Quick Facts

Typical Severity
HIGH
Category
memory
Total CVEs
666

Related CWEs

MITRE ATT&CK

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