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
3,755 active CVEs classified under this weakness category. Sourced from NVD, GHSA, and vendor advisories. Full definition on MITRE →
CVEs classified under CWE-122page 14 of 76
- CVE-2026-67381HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in SQL Server allows an authorized attacker to elevate privileges over a network.
- CVE-2026-67380HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
- CVE-2026-85877HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Windows Print Spooler Components allows an unauthorized attacker to execute code over a network.
- CVE-2026-83998HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- CVE-2026-83996HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
- CVE-2026-72940HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Windows Schannel allows an unauthorized attacker to execute code over a network.
- CVE-2026-80077HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- CVE-2026-80074HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
- CVE-2026-68786HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
- CVE-2026-78517HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- CVE-2026-78505HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network.
- CVE-2026-78511HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- CVE-2026-67384HIGHCVSS 8.8EG 8.82026-09-08
Integer overflow or wraparound in SQL Server allows an authorized attacker to execute code over a network.
- CVE-2026-77907HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.
- CVE-2026-69285HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code over a network.
- CVE-2026-72986HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Graphic Fonts allows an unauthorized attacker to execute code over a network.
- CVE-2026-77495HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code over a network.
- CVE-2026-69778HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.
- CVE-2026-69764HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- CVE-2026-69529HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.
- CVE-2026-69671HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- CVE-2026-69649HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Windows Raw Image Extension allows an unauthorized attacker to execute code over a network.
- CVE-2026-69603HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
- CVE-2026-69556HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
- CVE-2026-69518HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Windows Remote Desktop allows an unauthorized attacker to execute code over a network.
- CVE-2026-70586HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Windows Paint allows an unauthorized attacker to execute code over a network.
- CVE-2026-70351HIGHCVSS 8.8EG 8.82026-09-08
Integer overflow or wraparound in Microsoft WebP Image Extension allows an unauthorized attacker to execute code over a network.
- CVE-2026-69860HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code over a network.
- CVE-2026-69772HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Windows Network File System allows an unauthorized attacker to execute code over a network.
- CVE-2026-69681HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges over a network.
- CVE-2026-69729HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Windows Credential Providers allows an authorized attacker to execute code over a network.
- CVE-2026-69628HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Windows iSCSI allows an authorized attacker to execute code over a network.
- CVE-2026-69495HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Windows Event Logging Service allows an unauthorized attacker to execute code over a network.
- CVE-2026-69494HIGHCVSS 8.8EG 8.82026-09-08
Out-of-bounds read in Windows Event Logging Service allows an unauthorized attacker to execute code over a network.
- CVE-2026-67373HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
- CVE-2026-77482HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in SQL Server allows an unauthorized attacker to execute code over a network.
- CVE-2026-69522HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.
- CVE-2026-62744HIGHCVSS 8.8EG 8.82026-09-08
Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.
- CVE-2026-18341HIGHCVSS 8.8EG 8.82026-09-04
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to corrupt memory due to an integer underflow.
- CVE-2026-84268HIGHCVSS 8.8EG 8.82026-09-01
A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause read_reply() to process a length that exceeds the size requested by the client. The function does not verify the serv…
- CVE-2026-58095HIGHCVSS 8.8EG 8.82026-08-26
mp_Enddisc() used incorrect length calculations when formatting endpoint discriminator addresses for display, allowing a received endpoint option to overflow a global result buffer. A malicious PPP peer can crash ppp(8) or potentially exe…
- CVE-2026-79231HIGHCVSS 8.8EG 8.82026-08-25
Buffer overflow in Media in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
- CVE-2026-78891HIGHCVSS 8.8EG 8.82026-08-25
Buffer overflow in WebRTC in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
- CVE-2026-79142HIGHCVSS 8.8EG 8.82026-08-25
Buffer overflow in ANGLE in Google Chrome on on Android prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
- CVE-2026-50538HIGHCVSS 8.8EG 8.82026-08-21
LibVNCClient is a library for easy implementation of a VNC client. In versions 0.9.12 through 0.9.15, a malicious (or man-in-the-middle) VNC server can force a connecting `libvncclient` to write attacker-controlled data past the end of its…
- CVE-2026-76022HIGHCVSS 8.8EG 8.82026-08-20
Buffer overflow in Network in Google Chrome prior to 151.0.7922.173 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
- CVE-2026-55193HIGHCVSS 8.8EG 8.82026-08-19
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.0, FreeRDP clients using TS Gateway accept a server-controlled max_xmit_frag value in libfreerdp/core/gateway/rpc_bind.c without bounding it to the 4088-byte Re…
- CVE-2026-76034HIGHCVSS 8.8EG 8.82026-08-18
Buffer overflow in WebGL in Google Chrome prior to 151.0.7922.169 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)
- CVE-2026-19385HIGHCVSS 8.8EG 8.82026-08-13
Heap buffer overflow in PostgreSQL pg_dump of long function transform lists allows an object creator to execute arbitrary code as the operating system user running pg_dump, via a crafted transform list. Versions before PostgreSQL 18.6, 17…
- CVE-2026-14676HIGHCVSS 8.8EG 8.82026-08-13
Heap buffer overflow in PostgreSQL pg_stat_statements allows the query author to execute arbitrary code as the operating system user running the database, via crafted queries containing array constants. Within major version 18, minor vers…
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