Microsoft Office Ltsc 2021 vulnerabilities

432 known vulnerabilities affecting microsoft/microsoft_office_ltsc_2021.

Total CVEs

432

CISA KEV

actively exploited

Public exploits

Exploited in wild

Severity breakdown

CRITICAL4HIGH352MEDIUM68LOW8

Vulnerabilities

SortPage 21 of 22

CVE-2026-55121P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14

CVE-2026-55121 [MEDIUM] CWE-125 CVE-2026-55121: 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-2026-45455P4MEDIUMCVSS 4.3≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-06-09

CVE-2026-45455 [MEDIUM] CWE-125 CVE-2026-45455: 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-2023-36766P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-09-12

CVE-2023-36766 [MEDIUM] CWE-125 CVE-2023-36766: Microsoft Excel Information Disclosure Vulnerability Microsoft Excel Information Disclosure Vulnerability

nvd

CVE-2023-36009P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-12-12

CVE-2023-36009 [MEDIUM] CVE-2023-36009: Microsoft Word Information Disclosure Vulnerability Microsoft Word Information Disclosure Vulnerability

nvd

CVE-2025-21383P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2025-02-11

CVE-2025-21383 [MEDIUM] CWE-125 CVE-2025-21383: Microsoft Excel Information Disclosure Vulnerability Microsoft Excel Information Disclosure Vulnerability

nvd

CVE-2022-23252P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2022-02-09

CVE-2022-23252 [MEDIUM] CVE-2022-23252: Microsoft Office Information Disclosure Vulnerability Microsoft Office Information Disclosure Vulnerability

nvd

CVE-2021-40472P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2021-10-13

CVE-2021-40472 [MEDIUM] CVE-2021-40472: Microsoft Excel Information Disclosure Vulnerability Microsoft Excel Information Disclosure Vulnerability

nvd

CVE-2022-41103P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2022-11-09

CVE-2022-41103 [MEDIUM] CVE-2022-41103: Microsoft Word Information Disclosure Vulnerability Microsoft Word Information Disclosure Vulnerability

nvd

CVE-2023-33162P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-07-11

CVE-2023-33162 [MEDIUM] CWE-125 CVE-2023-33162: Microsoft Excel Information Disclosure Vulnerability Microsoft Excel Information Disclosure Vulnerability

nvd

CVE-2021-40454P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2021-10-13

CVE-2021-40454 [MEDIUM] CWE-312 CVE-2021-40454: Rich Text Edit Control Information Disclosure Vulnerability Rich Text Edit Control Information Disclosure Vulnerability

nvd

CVE-2022-41060P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2022-11-09

CVE-2022-41060 [MEDIUM] CVE-2022-41060: Microsoft Word Information Disclosure Vulnerability Microsoft Word Information Disclosure Vulnerability

nvd

CVE-2022-41105P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2022-11-09

CVE-2022-41105 [MEDIUM] CVE-2022-41105: Microsoft Excel Information Disclosure Vulnerability Microsoft Excel Information Disclosure Vulnerability

nvd

CVE-2023-21714P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-02-14

CVE-2023-21714 [MEDIUM] CWE-125 CVE-2023-21714: Microsoft Office Information Disclosure Vulnerability Microsoft Office Information Disclosure Vulnerability

nvd

CVE-2022-33632P4MEDIUMCVSS 4.7≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2022-07-12

CVE-2022-33632 [MEDIUM] CVE-2022-33632: Microsoft Office Security Feature Bypass Vulnerability Microsoft Office Security Feature Bypass Vulnerability

nvd

CVE-2026-45466P4LOWCVSS 3.3≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-06-09

CVE-2026-45466 [LOW] CWE-122 CVE-2026-45466: Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose info Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

nvd

CVE-2026-50678P4LOWCVSS 3.3≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14

CVE-2026-50678 [LOW] CWE-122 CVE-2026-50678: Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to disclose inf Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

nvd

CVE-2026-55035P4LOWCVSS 3.3≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14

CVE-2026-55035 [LOW] CWE-125 CVE-2026-55035: 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-2026-45485P4LOWCVSS 3.3≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-06-09

CVE-2026-45485 [LOW] CWE-125 CVE-2026-45485: 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-2026-56193P4LOWCVSS 3.3≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14

CVE-2026-56193 [LOW] CWE-125 CVE-2026-56193: 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-2026-50665P4LOWCVSS 3.3≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14

CVE-2026-50665 [LOW] CWE-125 CVE-2026-50665: 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

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