Known vulnerabilities in Microsoft Office LTSC 2021
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CVE list
| CVE | Summary | Score | Published |
|---|---|---|---|
| CVE-2026-45469 | Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Jun 9, 2026 |
| CVE-2026-40420 | Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally | 8.8 High | May 12, 2026 |
| CVE-2026-35436 | Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally | 8.8 High | May 12, 2026 |
| CVE-2026-40418 | Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally | 7.8 High | May 12, 2026 |
| CVE-2026-40367 | Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker… | 8.4 High | May 12, 2026 |
| CVE-2026-40362 | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | May 12, 2026 |
| CVE-2026-40361 | Use after free in Microsoft Office allows an unauthorized attacker to execute code locally | 8.4 High | May 12, 2026 |
| CVE-2026-40359 | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | May 12, 2026 |
| CVE-2026-40358 | Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally | 8.4 High | May 12, 2026 |
| CVE-2026-40419 | Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally | 7.8 High | May 12, 2026 |
| CVE-2026-40421 | Files or directories accessible to external parties in Microsoft Office Word allows an unauthorized attacker to disclose… | 4.3 Medium | May 12, 2026 |
| CVE-2026-40364 | Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker… | 8.4 High | May 12, 2026 |
| CVE-2026-40366 | Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker… | 8.4 High | May 12, 2026 |
| CVE-2026-40363 | Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally | 8.4 High | May 12, 2026 |
| CVE-2026-40360 | Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally | 7.8 High | May 12, 2026 |
| CVE-2026-35440 | Files or directories accessible to external parties in Microsoft Office Word allows an unauthorized attacker to disclose… | 5.5 Medium | May 12, 2026 |
| CVE-2026-21530 | Double free in Windows Rich Text Edit allows an authorized attacker to elevate privileges locally | 6.7 Medium | May 12, 2026 |
| CVE-2026-33115 | Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally | 8.4 High | Apr 14, 2026 |
| CVE-2026-33114 | Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally | 8.4 High | Apr 14, 2026 |
| CVE-2026-32200 | Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally | 7.8 High | Apr 14, 2026 |
| CVE-2026-32199 | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Apr 14, 2026 |
| CVE-2026-32197 | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Apr 14, 2026 |
| CVE-2026-32198 | Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Apr 14, 2026 |
| CVE-2026-32190 | Use after free in Microsoft Office allows an unauthorized attacker to execute code locally | 8.4 High | Apr 14, 2026 |
| CVE-2026-33095 | Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally | 7.8 High | Apr 14, 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