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Microsoft Office Ltsc 2021 vulnerabilities

781 known vulnerabilities affecting microsoft/microsoft_office_ltsc_2021.

Total CVEs
781
CISA KEV
9
actively exploited
Public exploits
13
Exploited in wild
12
Severity breakdown
CRITICAL13HIGH581MEDIUM179LOW8

Vulnerabilities

Page 34 of 40
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-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-2026-83951P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209062026-09-08
CVE-2026-83951 [MEDIUM] CWE-126 CVE-2026-83951: 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-2026-83949P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209062026-09-08
CVE-2026-83949 [MEDIUM] CWE-126 CVE-2026-83949: 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-2026-81399P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209062026-09-08
CVE-2026-81399 [MEDIUM] CWE-126 CVE-2026-81399: 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-2026-55026P4MEDIUMCVSS 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-2026-70323P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-08-11
CVE-2026-70323 [MEDIUM] CWE-20 CVE-2026-70323: Improper input validation in Microsoft Office allows an unauthorized attacker to disclose informatio Improper input validation in Microsoft Office allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-70312P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-08-11
CVE-2026-70312 [MEDIUM] CWE-20 CVE-2026-70312: Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-70322P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-08-11
CVE-2026-70322 [MEDIUM] CWE-20 CVE-2026-70322: Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-68809P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-08-11
CVE-2026-68809 [MEDIUM] CWE-459 CVE-2026-68809: Incomplete cleanup in Microsoft Office PowerPoint allows an unauthorized attacker to disclose inform Incomplete cleanup in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-70325P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-08-11
CVE-2026-70325 [MEDIUM] CWE-20 CVE-2026-70325: Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-70316P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-08-11
CVE-2026-70316 [MEDIUM] CWE-20 CVE-2026-70316: Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-70317P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-08-11
CVE-2026-70317 [MEDIUM] CWE-908 CVE-2026-70317: 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-2026-70320P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-08-11
CVE-2026-70320 [MEDIUM] CWE-20 CVE-2026-70320: Improper input validation in Microsoft Office PowerPoint allows an unauthorized attacker to disclose Improper input validation in Microsoft Office PowerPoint 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-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-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
CVE-2026-55028P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14
CVE-2026-55028 [MEDIUM] CWE-125 CVE-2026-55028: 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-2026-55124P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14
CVE-2026-55124 [MEDIUM] CWE-20 CVE-2026-55124: Improper validation of specified type of input in Microsoft Office Word allows an unauthorized attac Improper validation of specified type of input in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
nvd
Microsoft Office Ltsc 2021 vulnerabilities | cvebase