Known vulnerabilities in Microsoft Office LTSC 2021
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CVE list
| CVE | Summary | Score | Published |
|---|---|---|---|
| CVE-2026-50678 | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to disclose information locally | 6.6 Medium | Jul 14, 2026 |
| CVE-2026-50675 | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-47293 | Use after free in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally | 7.0 High | Jun 9, 2026 |
| CVE-2026-45463 | Integer underflow (wrap or wraparound) in Microsoft Office allows an unauthorized attacker to execute code locally | 8.4 High | Jun 9, 2026 |
| CVE-2026-45455 | Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally | 3.3 Low | Jun 9, 2026 |
| CVE-2026-44822 | Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network | 8.2 High | Jun 9, 2026 |
| CVE-2026-45645 | Untrusted pointer dereference in Microsoft Office allows an unauthorized attacker to execute code locally | 7.8 High | Jun 9, 2026 |
| CVE-2026-45643 | Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally | 7.8 High | Jun 9, 2026 |
| CVE-2026-45466 | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally | 3.3 Low | Jun 9, 2026 |
| CVE-2026-45461 | Use after free in Microsoft Office allows an unauthorized attacker to execute code locally | 8.4 High | Jun 9, 2026 |
| CVE-2026-45460 | Buffer over-read in Microsoft Office allows an unauthorized attacker to disclose information locally | 4.7 Medium | Jun 9, 2026 |
| CVE-2026-45458 | Use after free in Microsoft Office allows an unauthorized attacker to execute code locally | 8.4 High | Jun 9, 2026 |
| CVE-2026-45456 | Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to… | 8.4 High | Jun 9, 2026 |
| CVE-2026-44824 | Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally | 7.8 High | Jun 9, 2026 |
| CVE-2026-44821 | Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally | 5.5 Medium | Jun 9, 2026 |
| CVE-2026-44823 | Numeric truncation error in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Jun 9, 2026 |
| CVE-2026-44820 | Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Jun 9, 2026 |
| CVE-2026-44818 | Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Office Excel… | 7.0 High | Jun 9, 2026 |
| CVE-2026-44819 | Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally | 7.8 High | Jun 9, 2026 |
| CVE-2026-44817 | Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized… | 7.8 High | Jun 9, 2026 |
| CVE-2026-45485 | Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally | 3.3 Low | Jun 9, 2026 |
| CVE-2026-45474 | Use after free in Microsoft Office allows an unauthorized attacker to execute code locally | 8.4 High | Jun 9, 2026 |
| CVE-2026-45471 | Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally | 7.8 High | Jun 9, 2026 |
| CVE-2026-45472 | Use after free in Microsoft Office allows an unauthorized attacker to execute code locally | 8.4 High | Jun 9, 2026 |
| CVE-2026-45475 | Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally | 7.8 High | Jun 9, 2026 |
Other Microsoft products
Windows Server 2019 5745
Windows Server 2019 (Server Core installation) 5648
Windows 10 Version 1809 5349
Windows Server 2022 5112
Windows Server 2016 5051
Windows Server 2016 (Server Core installation) 4847
Windows 10 Version 21H2 4539
Windows 10 Version 1607 4535
Windows Server 2012 R2 4103
Windows 10 Version 22H2 4041
Windows Server 2012 R2 (Server Core installation) 3958
Windows Server 2012 3865