CWE-122— Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().— MITRE CWE catalog
3,270 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →
CVEs classified under CWE-122page 12 of 66
- CVE-2026-56003HIGHCVSS 8.8EG 8.82026-07-08
A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code…
- CVE-2026-56002HIGHCVSS 8.8EG 8.82026-07-08
A heap bufferflow in pcfReadFont() due to missing glyph bounds checking in libXfont2 before 2.0.8 allows attackers authenticated as X client to execute code within the X server.
- CVE-2026-56001HIGHCVSS 8.8EG 8.82026-07-08
A heap buffer overflow in BitmapScaleBitmaps in libXfont2 before 2.0.8 due to an overflowing 32bit size could be used by attackers able to access the X Server to execute code within the X server cont
- CVE-2026-11610HIGHCVSS 8.8EG 8.82026-07-07
A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). After a successful SASL bind with integrity protection (SSF > 0), an authenticated attacker can send a specially crafted oversized LDAP UNBI…
- CVE-2026-56645HIGHCVSS 8.8EG 8.82026-07-03
Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
- CVE-2026-14415HIGHCVSS 8.8EG 8.82026-07-02
Inappropriate implementation in V8 in Google Chrome prior to 150.0.7871.46 allowed a remote attacker who convinced a user to engage in specific UI gestures to potentially exploit heap corruption via a crafted HTML page. (Chromium security …
- CVE-2026-14385HIGHCVSS 8.8EG 8.82026-07-02
Heap buffer overflow in ANGLE in Google Chrome on Mac prior to 150.0.7871.46 allowed a remote attacker to perform out of bounds memory access via a crafted HTML page. (Chromium security severity: High)
- CVE-2026-14087HIGHCVSS 8.8EG 8.82026-06-30
Heap buffer overflow in WebNN in Google Chrome on Windows prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity…
- CVE-2026-13884HIGHCVSS 8.8EG 8.82026-06-30
Integer overflow in Chromecast in Google Chrome prior to 150.0.7871.47 allowed a local attacker to execute arbitrary code via malicious network traffic. (Chromium security severity: Medium)
- CVE-2026-13835HIGHCVSS 8.8EG 8.82026-06-30
Inappropriate implementation in XML in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
- CVE-2026-12244HIGHCVSS 8.8EG 8.82026-06-25
If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an (uint16_t) variable that is used to alloca…
- CVE-2026-12466HIGHCVSS 8.8EG 8.82026-06-17
Heap buffer overflow in WebRTC in Google Chrome on Windows prior to 149.0.7827.155 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)
- CVE-2026-12447HIGHCVSS 8.8EG 8.82026-06-17
Heap buffer overflow in WebRTC in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
- CVE-2026-0149HIGHCVSS 8.8EG 8.82026-06-16
In RtpSession::rtpSendRtcpPacket, there is a possible OOB write due to a heap buffer overflow. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.
- CVE-2026-0132HIGHCVSS 8.8EG 8.82026-06-16
In Modem, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation.
- CVE-2026-52720HIGHCVSS 8.8EG 8.82026-06-15
A heap buffer overflow vulnerability was found in GStreamer's librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extend…
- CVE-2026-47289HIGHCVSS 8.8EG 8.82026-06-09
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- CVE-2026-11124HIGHCVSS 8.8EG 8.82026-06-04
Integer overflow in Skia in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)
- CVE-2026-10995HIGHCVSS 8.8EG 8.82026-06-04
Heap buffer overflow in TabStrip in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who convinced a user to engage in specific UI gestures to potentially exploit heap corruption via a crafted HTML page. (Chromium security se…
- CVE-2026-10989HIGHCVSS 8.8EG 8.82026-06-04
Inappropriate implementation in V8 in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who convinced a user to engage in specific UI gestures to potentially exploit heap corruption via a crafted HTML page. (Chromium security …
- CVE-2026-44420HIGHCVSS 8.8EG 8.82026-05-29
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP client can trigger a heap-buffer-overflow write in FreeRDP's server-side clipboard (cliprdr) channel by sending a CB_CLIP_CAPS PDU with a too…
- CVE-2026-44421HIGHCVSS 8.8EG 8.82026-05-29
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, a malicious RDP server can trigger a heap-buffer-overflow write in the FreeRDP client by sending crafted RDPGFX PDUs. The bug is in gdi_CacheToSurface: it va…
- CVE-2026-9940HIGHCVSS 8.8EG 8.82026-05-28
Heap buffer overflow in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
- CVE-2026-9939HIGHCVSS 8.8EG 8.82026-05-28
Heap buffer overflow in WebCodecs in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
- CVE-2026-40033HIGHCVSS 8.8EG 8.82026-05-26
FreeRDP before 3.26.0 contains a heap-buffer-overflow vulnerability in gdi_CacheToSurface that allows remote attackers to write out-of-bounds heap memory. The vulnerability occurs because rectangle validation clamps coordinates to UINT16_M…
- CVE-2026-9119HIGHCVSS 8.8EG 8.82026-05-20
Heap buffer overflow in WebRTC in Google Chrome on prior to 148.0.7778.179 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
- CVE-2026-33633HIGHCVSS 8.8EG 8.82026-05-19
Kitty is a cross-platform GPU based terminal. Versions 0.46.2 and below contain a heap buffer overflow in load_image_data() that allows any process which can write to the terminal's stdin to crash kitty immediately. The vulnerability is tr…
- CVE-2026-8531HIGHCVSS 8.8EG 8.82026-05-14
Heap buffer overflow in WebML in Google Chrome on Windows prior to 148.0.7778.168 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
- CVE-2026-8529HIGHCVSS 8.8EG 8.82026-05-14
Heap buffer overflow in Codecs in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted video file. (Chromium security severity: High)
- CVE-2026-8509HIGHCVSS 8.8EG 8.82026-05-14
Heap buffer overflow in WebML in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Critical)
- CVE-2025-62624HIGHCVSS 8.8EG 8.82026-05-13
A heap-based buffer overflow in the ionic cloud driver for VMware ESXi could allow an attacker to achieve privilege escalation, potentially resulting in arbitrary code execution.
- CVE-2026-40403HIGHCVSS 8.8EG 8.82026-05-12
Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to execute code locally.
- CVE-2026-34329HIGHCVSS 8.8EG 8.82026-05-12
Heap-based buffer overflow in Windows Message Queuing allows an unauthorized attacker to execute code over an adjacent network.
- CVE-2026-25589HIGHCVSS 8.8EG 8.82026-05-05
RedisBloom is a probabilistic data structures module for Redis. In all versions of RedisBloom before 2.8.20, the module does not properly validate serialized values processed through the Redis RESTORE command. An authenticated attacker wit…
- CVE-2026-25588HIGHCVSS 8.8EG 8.82026-05-05
RedisTimeSeries is a time-series module for Redis. In all versions before 1.12.14 of RedisTimeSeries, the module does not properly validate serialized values processed through the Redis RESTORE command. An authenticated attacker with permi…
- CVE-2026-25243HIGHCVSS 8.8EG 8.82026-05-05
Redis is an in-memory data structure store. In versions of redis-server up to 8.6.3, the RESTORE command does not properly validate serialized values. An authenticated attacker with permission to execute RESTORE can supply a crafted serial…
- CVE-2026-5402HIGHCVSS 8.8EG 8.82026-04-30
TLS protocol dissector heap overflow in Wireshark 4.6.0 to 4.6.4 allows denial of service and possible code execution
- CVE-2026-7339HIGHCVSS 8.8EG 8.82026-04-28
Heap buffer overflow in WebRTC in Google Chrome prior to 147.0.7727.138 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)
- CVE-2026-20766HIGHCVSS 8.8EG 8.82026-04-28
An out-of-bounds memory access vulnerability exists in specific firmware versions of Milesight AIOT cameras.
- CVE-2026-40614HIGHCVSS 8.8EG 8.82026-04-21
PJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, there is a buffer overflow when decoding Opus audio frames due to insufficient buffer size validation in the Opus codec decode path. The FE…
- CVE-2026-41445HIGHCVSS 8.8EG 8.82026-04-20
KissFFT before commit 8a8e66e contains an integer overflow vulnerability in the kiss_fftndr_alloc() function in kiss_fftndr.c where the allocation size calculation dimOther*(dimReal+2)*sizeof(kiss_fft_scalar) overflows signed 32-bit integ…
- CVE-2026-35512HIGHCVSS 8.8EG 8.82026-04-17
xrdp is an open source RDP server. Versions through 0.10.5 have a heap-based buffer overflow in the EGFX (graphics dynamic virtual channel) implementation due to insufficient validation of client-controlled size parameters, allowing an out…
- CVE-2026-6306HIGHCVSS 8.8EG 8.82026-04-15
Heap buffer overflow in PDFium in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted PDF file. (Chromium security severity: High)
- CVE-2026-6305HIGHCVSS 8.8EG 8.82026-04-15
Heap buffer overflow in PDFium in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted PDF file. (Chromium security severity: High)
- CVE-2026-5868HIGHCVSS 8.8EG 8.82026-04-08
Heap buffer overflow in ANGLE in Google Chrome on Mac prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
- CVE-2026-5858HIGHCVSS 8.8EG 8.82026-04-08
Heap buffer overflow in WebML in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)
- CVE-2026-5474HIGHCVSS 8.8EG 8.82026-04-03
A vulnerability was found in NASA cFS up to 7.0.0. This affects the function CFE_MSG_GetSize of the file apps/to_lab/fsw/src/to_lab_passthru_encode.c of the component CCSDS Packet Header Handler. Performing a manipulation results in heap-b…
- CVE-2026-5275HIGHCVSS 8.8EG 8.82026-04-01
Heap buffer overflow in ANGLE in Google Chrome on Mac prior to 146.0.7680.178 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)
- CVE-2026-5272HIGHCVSS 8.8EG 8.82026-04-01
Heap buffer overflow in GPU in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)
- CVE-2026-4675HIGHCVSS 8.8EG 8.82026-03-24
Heap buffer overflow in WebGL in Google Chrome prior to 146.0.7680.165 allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page. (Chromium security severity: High)
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