CWE-122
2,524 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 (2,524)
CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS |
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1Microsoft 12Windows 10 1607 Windows 10 1809Windows 10 21h2+9 moreJul 22, 2026 Jul 14, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally. |
1Microsoft 7Windows 10 1607 Windows 10 1809Windows Server 2012+4 moreJul 21, 2026 Jul 14, 2026 N/A· v4 9.8 CRITICAL· v3 N/A· v2 Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network. |
1Microsoft 4365 Apps Microsoft 365Office 2021+1 moreJul 15, 2026 Jul 14, 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 7365 Apps ExcelMicrosoft 365+4 moreJul 15, 2026 Jul 14, 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 2016+3 moreJul 16, 2026 Jul 14, 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 7365 Apps ExcelMicrosoft 365+4 moreJul 15, 2026 Jul 14, 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 moreJul 22, 2026 Jul 14, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office OneNote allows an unauthorized attacker to execute code locally. |
1Microsoft 7365 Apps ExcelMicrosoft 365+4 moreJul 15, 2026 Jul 14, 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 Office 2019Office 2021+3 moreJul 15, 2026 Jul 14, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally. |
1Microsoft 6365 Apps Microsoft 365Office 2016+3 moreJul 16, 2026 Jul 14, 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 8365 Apps Microsoft 365Office 2019+5 moreJul 16, 2026 Jul 14, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally. |
1Microsoft 7365 Apps Microsoft 365Office 2016+4 moreJul 16, 2026 Jul 14, 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 Microsoft 365Office 2019+3 moreJul 16, 2026 Jul 14, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally. |
1Microsoft 6365 Apps Microsoft 365Office 2019+3 moreJul 15, 2026 Jul 14, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally. |
1Microsoft 6365 Apps Microsoft 365Office 2016+3 moreJul 16, 2026 Jul 14, 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 7365 Apps ExcelMicrosoft 365+4 moreJul 15, 2026 Jul 14, 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 5365 Apps Office 2016Office 2019+2 moreJul 16, 2026 Jul 14, 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 7365 Apps ExcelMicrosoft 365+4 moreJul 15, 2026 Jul 14, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code locally. |
1Microsoft 6365 Apps Microsoft 365Office 2019+3 moreJul 16, 2026 Jul 14, 2026 N/A· v4 7.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally. |
1Microsoft 7365 Apps ExcelMicrosoft 365+4 moreJul 16, 2026 Jul 14, 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. |