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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 19 of 22
CVE-2024-49059P4HIGHCVSS 7.0≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2024-12-12
CVE-2024-49059 [HIGH] CWE-59 CVE-2024-49059: Microsoft Office Elevation of Privilege Vulnerability Microsoft Office Elevation of Privilege Vulnerability
nvd
CVE-2025-54905P4HIGHCVSS 7.1≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2025-09-09
CVE-2025-54905 [HIGH] CWE-822 CVE-2025-54905: Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to disclose i Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
nvd
CVE-2023-36568P4HIGHCVSS 7.0≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-10-10
CVE-2023-36568 [HIGH] CWE-59 CVE-2023-36568: Microsoft Office Click-To-Run Elevation of Privilege Vulnerability Microsoft Office Click-To-Run Elevation of Privilege Vulnerability
nvd
CVE-2025-53736P4MEDIUMCVSS 6.2≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2025-08-12
CVE-2025-53736 [MEDIUM] CWE-126 CVE-2025-53736: Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information lo Buffer over-read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
nvd
CVE-2023-36897P4MEDIUMCVSS 6.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-08-08
CVE-2023-36897 [MEDIUM] CWE-20 CVE-2023-36897: Visual Studio Tools for Office Runtime Spoofing Vulnerability Visual Studio Tools for Office Runtime Spoofing Vulnerability
nvd
CVE-2026-55026P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14
CVE-2026-55026 [MEDIUM] CWE-190 CVE-2026-55026: Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to disclose infor Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-21258P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-02-10
CVE-2026-21258 [MEDIUM] CWE-20 CVE-2026-21258: Improper input validation in Microsoft Office Excel allows an unauthorized attacker to disclose info Improper input validation in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-21261P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-02-10
CVE-2026-21261 [MEDIUM] CWE-125 CVE-2026-21261: Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
nvd
CVE-2025-59240P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2025-11-11
CVE-2025-59240 [MEDIUM] CWE-200 CVE-2025-59240: Exposure of sensitive information to an unauthorized actor in Microsoft Office Excel allows an unaut Exposure of sensitive information to an unauthorized actor in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-35440P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-05-12
CVE-2026-35440 [MEDIUM] CWE-552 CVE-2026-35440: Files or directories accessible to external parties in Microsoft Office Word allows an unauthorized Files or directories accessible to external parties in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-55057P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14
CVE-2026-55057 [MEDIUM] CWE-190 CVE-2026-55057: Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to disclose infor Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-55042P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14
CVE-2026-55042 [MEDIUM] CWE-908 CVE-2026-55042: Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose inform Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information locally.
nvd
CVE-2022-29107P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2022-05-10
CVE-2022-29107 [MEDIUM] CVE-2022-29107: Microsoft Office Security Feature Bypass Vulnerability Microsoft Office Security Feature Bypass Vulnerability
nvd
CVE-2025-54901P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2025-09-09
CVE-2025-54901 [MEDIUM] CWE-126 CVE-2025-54901: Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information l Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-55027P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14
CVE-2026-55027 [MEDIUM] CWE-125 CVE-2026-55027: Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information local Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-55023P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14
CVE-2026-55023 [MEDIUM] CWE-125 CVE-2026-55023: Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information local Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-55047P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14
CVE-2026-55047 [MEDIUM] CWE-125 CVE-2026-55047: Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information local Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-55046P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14
CVE-2026-55046 [MEDIUM] CWE-125 CVE-2026-55046: Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-56195P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14
CVE-2026-56195 [MEDIUM] CWE-125 CVE-2026-56195: Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information local Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-56192P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14
CVE-2026-56192 [MEDIUM] CWE-125 CVE-2026-56192: Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information local Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
nvd
Microsoft Office Ltsc 2021 vulnerabilities | cvebase