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Microsoft Office Ltsc 2021 vulnerabilities

432 known vulnerabilities affecting microsoft/microsoft_office_ltsc_2021.

Total CVEs
432
CISA KEV
9
actively exploited
Public exploits
13
Exploited in wild
12
Severity breakdown
CRITICAL4HIGH352MEDIUM68LOW8

Vulnerabilities

Page 2 of 22
CVE-2023-32029P3HIGHCVSS 7.8≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-06-14
CVE-2023-32029 [HIGH] CWE-125 CVE-2023-32029: Microsoft Excel Remote Code Execution Vulnerability Microsoft Excel Remote Code Execution Vulnerability
nvd
CVE-2023-33133P3HIGHCVSS 7.8≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-06-14
CVE-2023-33133 [HIGH] CWE-122 CVE-2023-33133: Microsoft Excel Remote Code Execution Vulnerability Microsoft Excel Remote Code Execution Vulnerability
nvd
CVE-2024-30103P2HIGHCVSS 8.8≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2024-06-11
CVE-2024-30103 [HIGH] CWE-184 CVE-2024-30103: Microsoft Outlook Remote Code Execution Vulnerability Microsoft Outlook Remote Code Execution Vulnerability
nvd
CVE-2025-47171P3MEDIUMCVSS 6.7PoC≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2025-06-10
CVE-2025-47171 [MEDIUM] CWE-20 CVE-2025-47171: Improper input validation in Microsoft Office Outlook allows an authorized attacker to execute code Improper input validation in Microsoft Office Outlook allows an authorized attacker to execute code locally.
nvd
CVE-2022-41106P3HIGHCVSS 8.8≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2022-11-09
CVE-2022-41106 [HIGH] CVE-2022-41106: Microsoft Excel Remote Code Execution Vulnerability Microsoft Excel Remote Code Execution Vulnerability
nvd
CVE-2026-40364P3HIGHCVSS 8.4≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-05-12
CVE-2026-40364 [HIGH] CWE-122 CVE-2026-40364: Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an una Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-40361P3HIGHCVSS 8.4≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-05-12
CVE-2026-40361 [HIGH] CWE-416 CVE-2026-40361: Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-20953P3HIGHCVSS 8.4≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-01-13
CVE-2026-20953 [HIGH] CWE-416 CVE-2026-20953: Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-40363P3HIGHCVSS 8.4≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-05-12
CVE-2026-40363 [HIGH] CWE-122 CVE-2026-40363: Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code local Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-40358P3HIGHCVSS 8.4≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-05-12
CVE-2026-40358 [HIGH] CWE-416 CVE-2026-40358: Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code local Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
nvd
CVE-2023-33150P3CRITICALCVSS 9.6≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-07-11
CVE-2023-33150 [CRITICAL] CWE-693 CVE-2023-33150: Microsoft Office Security Feature Bypass Vulnerability Microsoft Office Security Feature Bypass Vulnerability
nvd
CVE-2025-54910P3HIGHCVSS 8.4≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2025-09-09
CVE-2025-54910 [HIGH] CWE-122 CVE-2025-54910: Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code local Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-20952P3HIGHCVSS 8.4≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-01-13
CVE-2026-20952 [HIGH] CWE-416 CVE-2026-20952: Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-45461P3HIGHCVSS 8.4≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-06-09
CVE-2026-45461 [HIGH] CWE-416 CVE-2026-45461: Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-45472P3HIGHCVSS 8.4≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-06-09
CVE-2026-45472 [HIGH] CWE-416 CVE-2026-45472: Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-45474P3HIGHCVSS 8.4≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-06-09
CVE-2026-45474 [HIGH] CWE-416 CVE-2026-45474: Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-45458P3HIGHCVSS 8.4≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-06-09
CVE-2026-45458 [HIGH] CWE-416 CVE-2026-45458: Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-32190P3HIGHCVSS 8.4≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-04-14
CVE-2026-32190 [HIGH] CWE-416 CVE-2026-32190: Use after free in Microsoft Office allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
nvd
CVE-2026-33115P3HIGHCVSS 8.4≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-04-14
CVE-2026-33115 [HIGH] CWE-416 CVE-2026-33115: Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally. Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
nvd
CVE-2022-21840P3HIGHCVSS 8.8≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2022-01-11
CVE-2022-21840 [HIGH] CVE-2022-21840: Microsoft Office Remote Code Execution Vulnerability Microsoft Office Remote Code Execution Vulnerability
nvd
Microsoft Office Ltsc 2021 vulnerabilities | cvebase