CWE-122
3,698 CVEs • Abstraction: Variant • Likelihood of Exploit: High
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().
CVEs (3,698)
CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS |
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1Microsoft 13Windows 10 1607 Windows 10 1809Windows 10 21h2+10 moreAug 17, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Windows DNS allows an authorized attacker to elevate privileges locally. |
1Microsoft 4365 Apps Office 2019Office 2021+1 moreAug 14, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally. |
1Microsoft 6365 Apps ExcelMicrosoft 365+3 moreAug 13, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. |
1Microsoft 6365 Apps ExcelMicrosoft 365+3 moreAug 13, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. |
1Microsoft 6365 Apps ExcelMicrosoft 365+3 moreOct 28, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. |
1Microsoft 6365 Apps ExcelMicrosoft 365+3 moreAug 13, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. |
1Microsoft 6365 Apps ExcelMicrosoft 365+3 moreAug 13, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Numeric truncation error in Microsoft Office Excel allows an unauthorized attacker to execute code locally. |
1Microsoft 6365 Apps ExcelMicrosoft 365+3 moreAug 13, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. |
1Microsoft 6365 Apps ExcelMicrosoft 365+3 moreOct 21, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. |
1Microsoft 4365 Apps Microsoft 365Office 2021+1 moreOct 21, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. |
1Microsoft 6365 Apps ExcelMicrosoft 365+3 moreAug 13, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. |
1Microsoft 6365 Apps ExcelMicrosoft 365+3 moreAug 13, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally. |
1Microsoft 6365 Apps Microsoft 365Office 2019+3 moreAug 14, 2026 Aug 11, 2026 N/A· v4 5.5 MEDIUM· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally. |
1Microsoft 13Windows 10 1607 Windows 10 1809Windows 10 21h2+10 moreAug 16, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Windows Key Guard allows an authorized attacker to elevate privileges locally. |
1Microsoft 13Windows 10 1607 Windows 10 1809Windows 10 21h2+10 moreAug 16, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Windows Storage Port Driver allows an authorized attacker to elevate privileges locally. |
1Microsoft 13Windows 10 1607 Windows 10 1809Windows 10 21h2+10 moreAug 17, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Integer overflow or wraparound in Windows DNS allows an authorized attacker to elevate privileges locally. |
1Microsoft 13Windows 10 1607 Windows 10 1809Windows 10 21h2+10 moreAug 17, 2026 Aug 11, 2026 N/A· v4 6.7 MEDIUM· v3 N/A· v2 Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally. |
1Microsoft 7Windows 10 1607 Windows 10 1809Windows Server 2012+4 moreAug 16, 2026 Aug 11, 2026 N/A· v4 8.1 HIGH· v3 N/A· v2 Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network. |
1Microsoft 7Windows 10 1607 Windows 10 1809Windows Server 2012+4 moreAug 16, 2026 Aug 11, 2026 N/A· v4 9.8 CRITICAL· v3 N/A· v2 Heap-based buffer overflow in Windows iSCSI Target Service allows an unauthorized attacker to execute code over a network. |
1Microsoft 13Windows 10 1607 Windows 10 1809Windows 10 21h2+10 moreAug 16, 2026 Aug 11, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Windows Message Queuing allows an authorized attacker to elevate privileges locally. |