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 35 of 40
CVE-2026-55050P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-07-14
CVE-2026-55050 [MEDIUM] CWE-125 CVE-2026-55050: Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information
Out-of-bounds read in Microsoft Office Word 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-2026-55047P4MEDIUMCVSS 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-2026-55023P4MEDIUMCVSS 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-2026-70214P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209742026-10-13
CVE-2026-70214 [MEDIUM] CWE-125 CVE-2026-70214: 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-2026-81394P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209062026-09-08
CVE-2026-81394 [MEDIUM] CWE-497 CVE-2026-81394: Exposure of sensitive system information to an unauthorized control sphere in Microsoft Office Excel
Exposure of sensitive system information to an unauthorized control sphere in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-81387P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209062026-09-08
CVE-2026-81387 [MEDIUM] CWE-497 CVE-2026-81387: Exposure of sensitive system information to an unauthorized control sphere in Microsoft Office Excel
Exposure of sensitive system information to an unauthorized control sphere in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-78506P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209062026-09-08
CVE-2026-78506 [MEDIUM] CWE-170 CVE-2026-78506: Improper null termination in Microsoft Office Word allows an unauthorized attacker to disclose infor
Improper null termination in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-81958P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209062026-09-08
CVE-2026-81958 [MEDIUM] CWE-908 CVE-2026-81958: Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to disclose
Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-85875P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209062026-09-08
CVE-2026-85875 [MEDIUM] CWE-125 CVE-2026-85875: 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-2026-81390P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209062026-09-08
CVE-2026-81390 [MEDIUM] CWE-125 CVE-2026-81390: 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-2026-81393P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209062026-09-08
CVE-2026-81393 [MEDIUM] CWE-125 CVE-2026-81393: 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-2026-81400P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209062026-09-08
CVE-2026-81400 [MEDIUM] CWE-125 CVE-2026-81400: 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-2026-81392P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209062026-09-08
CVE-2026-81392 [MEDIUM] CWE-20 CVE-2026-81392: 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-2026-81391P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209062026-09-08
CVE-2026-81391 [MEDIUM] CWE-908 CVE-2026-81391: Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to disclose
Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-81395P4MEDIUMCVSS 5.5≥ 16.0.1, < 16.0.14334.209062026-09-08
CVE-2026-81395 [MEDIUM] CWE-125 CVE-2026-81395: 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-2026-63530P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-08-11
CVE-2026-63530 [MEDIUM] CWE-125 CVE-2026-63530: Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-68797P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-08-11
CVE-2026-68797 [MEDIUM] CWE-125 CVE-2026-68797: 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-2026-63531P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-08-11
CVE-2026-63531 [MEDIUM] CWE-125 CVE-2026-63531: Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
nvd
CVE-2026-64917P4MEDIUMCVSS 5.5≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases2026-08-11
CVE-2026-64917 [MEDIUM] CWE-125 CVE-2026-64917: Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
nvd