Microsoft Microsoft Office LTSC 2021 for 64-bit editions

Name: Microsoft Microsoft Office LTSC 2021 for 64-bit editions
Brand: Microsoft

productNL

A product tracked in the threat graph; the vulnerabilities below are known to affect it.

by severity

15critical237high165medium6low

updated 2026-10-27

vulnerabilities (767)

Related CVEs.

sort

ID	severity	EPSS	exploitable	patched	published	affected
CVE-2026-21509US	—OT critical	70.8% (99th)	KEV	https://aka.ms/OfficeSecurityReleases	2026-01-26	3 versions
CVE-2026-55040US	—OT critical	69.5% (99th)	KEV	no fix	2026-07-14	≤ vers:unknown/*
CVE-2026-32201US	medium6.5OT critical	43.4% (99th)	KEV	no fix	2026-04-14	≤ vers:unknown/*
CVE-2026-65660US	high8.8OT critical	8.19% (95th)	KEV	no fix	2026-08-11	≤ vers:unknown/*
CVE-2026-50522US	—OT critical	3.04% (87th)	KEV	no fix	2026-07-14	≤ vers:unknown/*
CVE-2026-21514US	—OT critical	1.59% (75th)	KEV	no fix	2026-02-10	≤ vers:unknown/*
CVE-2026-56164US	critical9.8OT critical	1.01% (63rd)	KEV	no fix	2026-07-14	≤ vers:unknown/*
CVE-2026-20963US	—OT critical	29.2% (98th)	KEV	no fix	2026-01-13	≤ vers:unknown/*
CVE-2026-58644US	—OT critical	15.9% (97th)	KEV	no fix	2026-07-14	≤ vers:unknown/*
CVE-2026-96951US	high8.8OT critical	9.81% (96th)	KEV	no fix	2026-10-13	≤ vers:unknown/*
CVE-2026-26114US	—	3.15% (88th)	Exploit	no fix	2026-03-10	≤ vers:unknown/*
CVE-2026-63520US	—	0.96% (61st)	Exploit	no fix	2026-08-11	≤ vers:unknown/*
CVE-2026-45484US	—	35.2% (98th)	—	no fix	2026-06-09	≤ vers:unknown/*
CVE-2026-33112US	—	31.1% (98th)	—	no fix	2026-05-12	≤ vers:unknown/*
CVE-2026-20945US	medium5.4	19.1% (97th)	—	no fix	2026-04-14	≤ vers:unknown/*
CVE-2026-20947US	—	18.4% (97th)	—	no fix	2026-01-13	≤ vers:unknown/*
CVE-2026-20959US	medium5.4	7.68% (95th)	—	no fix	2026-01-13	≤ vers:unknown/*
CVE-2025-60724US	—	6.29% (94th)	—	no fix	2025-11-11	≤ vers:unknown/*
CVE-2026-40364US	—	4.42% (91st)	—	https://aka.ms/OfficeSecurityReleases	2026-05-12	3 versions
CVE-2026-21511US	—	3.97% (90th)	—	no fix	2026-02-10	≤ vers:unknown/*
CVE-2025-62204US	—	2.21% (82nd)	—	no fix	2025-11-11	≤ vers:unknown/*
CVE-2026-66808US	—	2.04% (81st)	—	no fix	2026-08-11	≤ vers:unknown/*
CVE-2026-66805US	—	2.04% (81st)	—	no fix	2026-08-11	≤ vers:unknown/*
CVE-2026-65663US	—	2.04% (81st)	—	no fix	2026-08-11	≤ vers:unknown/*
CVE-2026-65658US	—	2.04% (81st)	—	no fix	2026-08-11	≤ vers:unknown/*
CVE-2026-64901US	—	2.04% (81st)	—	no fix	2026-08-11	≤ vers:unknown/*
CVE-2026-63514US	—	2.04% (81st)	—	no fix	2026-08-11	≤ vers:unknown/*
CVE-2026-35439US	—	2.03% (81st)	—	no fix	2026-05-12	≤ vers:unknown/*
CVE-2026-33110US	—	1.97% (80th)	—	no fix	2026-05-12	≤ vers:unknown/*
CVE-2026-63516US	—	1.87% (79th)	—	no fix	2026-08-11	≤ vers:unknown/*
CVE-2026-40368US	—	1.82% (79th)	—	no fix	2026-05-12	≤ vers:unknown/*
CVE-2026-40357US	—	1.70% (77th)	—	no fix	2026-05-12	≤ vers:unknown/*
CVE-2026-70321US	—	1.69% (77th)	—	no fix	2026-08-11	≤ vers:unknown/*
CVE-2026-65665US	—	1.69% (77th)	—	no fix	2026-08-11	≤ vers:unknown/*
CVE-2026-50515US	—	1.69% (77th)	—	no fix	2026-08-07	≤ vers:unknown/*
CVE-2026-45454US	high8.8	1.63% (76th)	—	no fix	2026-06-09	≤ vers:unknown/*
CVE-2026-70242US	critical9.8	1.57% (75th)	—	16.0.14334.20974	2026-10-13	3 versions
CVE-2026-21260US	—	1.52% (74th)	—	no fix	2026-02-10	≤ vers:unknown/*
CVE-2026-85900US	high8.8	1.52% (74th)	—	no fix	2026-10-13	≤ vers:unknown/*
CVE-2026-26106US	—	1.46% (73rd)	—	no fix	2026-03-10	≤ vers:unknown/*
CVE-2026-70291US	critical9.8	1.33% (71st)	—	16.0.14334.20974	2026-10-13	3 versions
CVE-2026-81385US	high8.8	1.29% (70th)	—	16.0.14334.20906	2026-09-08	3 versions
CVE-2026-26144US	medium4.7	1.26% (70th)	—	no fix	2026-03-10	≤ vers:unknown/*
CVE-2026-42835US	—	1.26% (69th)	—	no fix	2026-06-09	≤ vers:unknown/*
CVE-2026-70298US	medium6.5	1.23% (69th)	—	no fix	2026-10-13	≤ vers:unknown/*
CVE-2026-26105US	critical9.3	1.23% (69th)	—	no fix	2026-03-10	≤ vers:unknown/*
CVE-2026-62837US	—	1.23% (69th)	—	no fix	2026-08-11	≤ vers:unknown/*
CVE-2026-97749US	critical9.8	1.20% (68th)	—	16.0.14334.20974	2026-10-13	3 versions
CVE-2025-21186US	—	1.19% (68th)	—	https://aka.ms/OfficeSecurityReleases	2025-01-14	2 versions
CVE-2026-85932US	medium6.5	1.18% (68th)	—	no fix	2026-10-13	≤ vers:unknown/*

showing 50 of 767

weaknesses (8)

The flaw types (CWEs) most of these CVEs share.

CWE-122Heap-based Buffer Overflow192 CVEs
CWE-125Out-of-bounds Read132 CVEs
CWE-416Use After Free107 CVEs
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')55 CVEs
CWE-121Stack-based Buffer Overflow38 CVEs
CWE-20Improper Input Validation31 CVEs
CWE-822Untrusted Pointer Dereference28 CVEs
CWE-190Integer Overflow or Wraparound27 CVEs

sources (2)

Which sources assert this record, and when.

NLNCSC-NL (CSAF)667 CVEs
USMicrosoft MSRC (CSAF)536 CVEs

scry

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