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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

SortPage 22 of 22

CVE-2026-55139P4LOWCVSS 3.3≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14

CVE-2026-55139 [LOW] CWE-125 CVE-2026-55139: 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.

CVE-2022-35742HIGHCVSS 7.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-06-01

CVE-2022-35742 [HIGH] Microsoft Outlook Denial of Service Vulnerability Microsoft Outlook Denial of Service Vulnerability Microsoft Outlook Denial of Service Vulnerability

CVE-2023-33151MEDIUMCVSS 6.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-07-11

CVE-2023-33151 [MEDIUM] Microsoft Outlook Spoofing Vulnerability Microsoft Outlook Spoofing Vulnerability Microsoft Outlook Spoofing Vulnerability

CVE-2023-23398HIGHCVSS 7.1≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-03-14

CVE-2023-23398 [HIGH] Microsoft Excel Spoofing Vulnerability Microsoft Excel Spoofing Vulnerability Microsoft Excel Spoofing Vulnerability

CVE-2024-43609MEDIUMCVSS 6.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2024-10-08

CVE-2024-43609 [MEDIUM] CWE-200 Microsoft Office Spoofing Vulnerability Microsoft Office Spoofing Vulnerability Microsoft Office Spoofing Vulnerability

CVE-2023-36893MEDIUMCVSS 6.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-08-08

CVE-2023-36893 [MEDIUM] CWE-20 Microsoft Outlook Spoofing Vulnerability Microsoft Outlook Spoofing Vulnerability Microsoft Outlook Spoofing Vulnerability

CVE-2024-38020MEDIUMCVSS 6.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2024-07-09

CVE-2024-38020 [MEDIUM] CWE-200 Microsoft Outlook Spoofing Vulnerability Microsoft Outlook Spoofing Vulnerability Microsoft Outlook Spoofing Vulnerability

CVE-2022-38001MEDIUMCVSS 6.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2022-10-11

CVE-2022-38001 [MEDIUM] Microsoft Office Spoofing Vulnerability Microsoft Office Spoofing Vulnerability Microsoft Office Spoofing Vulnerability

CVE-2023-41764MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-09-12

CVE-2023-41764 [MEDIUM] CWE-347 Microsoft Office Spoofing Vulnerability Microsoft Office Spoofing Vulnerability Microsoft Office Spoofing Vulnerability

CVE-2022-24511MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2022-03-09

CVE-2022-24511 [MEDIUM] Microsoft Office Word Tampering Vulnerability Microsoft Office Word Tampering Vulnerability Microsoft Office Word Tampering Vulnerability

CVE-2023-36769MEDIUMCVSS 4.6≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-11-06

CVE-2023-36769 [MEDIUM] Microsoft OneNote Spoofing Vulnerability Microsoft OneNote Spoofing Vulnerability Microsoft OneNote Spoofing Vulnerability

CVE-2023-29333LOWCVSS 3.3≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2023-05-09

CVE-2023-29333 [LOW] Microsoft Access Denial of Service Vulnerability Microsoft Access Denial of Service Vulnerability Microsoft Access Denial of Service Vulnerability

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Microsoft Office Ltsc 2021 vulnerabilities | cvebase