CWE-122
3,678 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 (3,678)
CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS |
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1Microsoft 5365 Apps Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 5365 Apps Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 5365 Apps Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 5365 Apps Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 5365 Apps Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 5365 Apps Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 5365 Apps Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 5365 Apps Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 5365 Apps Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 5365 Apps Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 5365 Apps Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 4365 Apps Microsoft 365Office 2021+1 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 5365 Apps Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 3365 Apps Office 2021Office 2024Oct 15, 2026 Oct 13, 2026 N/A· v4 9.8 CRITICAL· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network. |
1Microsoft 3365 Apps Office 2021Office 2024Oct 14, 2026 Oct 13, 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 Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 5365 Apps Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 5365 Apps Microsoft 365Office 2021+2 moreOct 15, 2026 Oct 13, 2026 N/A· v4 8.8 HIGH· v3 N/A· v2 Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network. |
1Microsoft 4365 Apps Microsoft 365Office 2021+1 moreOct 15, 2026 Oct 13, 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 3365 Apps Office 2021Office 2024Oct 15, 2026 Oct 13, 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. |