Known vulnerabilities in Microsoft Office LTSC 2021
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CVE list
| CVE | Summary | Score | Published |
|---|---|---|---|
| CVE-2026-55137 | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55132 | Double free in Microsoft Office Word allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55038 | Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55058 | Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55037 | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55054 | Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network | 6.5 Medium | Jul 14, 2026 |
| CVE-2026-55055 | Stack-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55036 | Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55044 | Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55035 | Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally | 5.5 Medium | Jul 14, 2026 |
| CVE-2026-55129 | Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55141 | Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55136 | Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55127 | Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55138 | Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to disclose information locally | 5.5 Medium | Jul 14, 2026 |
| CVE-2026-55124 | Improper validation of specified type of input in Microsoft Office Word allows an unauthorized attacker to disclose… | 5.5 Medium | Jul 14, 2026 |
| CVE-2026-55041 | Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55033 | Integer overflow or wraparound in Microsoft Office Word allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55032 | Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55049 | Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55050 | Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally | 5.5 Medium | Jul 14, 2026 |
| CVE-2026-55045 | Out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally | 8.4 High | Jul 14, 2026 |
| CVE-2026-55039 | Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally | 7.8 High | Jul 14, 2026 |
| CVE-2026-55028 | Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally | 5.5 Medium | Jul 14, 2026 |
| CVE-2026-55047 | Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally | 5.5 Medium | Jul 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