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Fencer Vulns
high 7.5

CVE-2025-29816 json

Microsoft Word Security Feature Bypass Vulnerability

published 2025-04-08 19 mo ago modified 2026-08-10 2 mo ago also EUVD-2025-10113

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 41%
public exploits
0
none known

Summary

Improper input validation in Microsoft Office Word allows an unauthorized attacker to bypass a security feature over a network.

Patch / fix

  • Microsoft Microsoft Office 2016 16.0.5495.1002
  • Microsoft Microsoft Office LTSC for Mac 2021 16.96.25041326
  • Microsoft Microsoft Office LTSC for Mac 2024 16.96.25041326
  • Microsoft Microsoft Word 2016 16.0.5495.1002

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
19 mo ago

Exploit prediction

0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Microsoft Microsoft 365 Apps for Enterprise
  • Microsoft Microsoft Office 2016
  • Microsoft Microsoft Office 2019
  • Microsoft Microsoft Office LTSC 2021
  • Microsoft Microsoft Office LTSC 2024
  • Microsoft Microsoft Office LTSC for Mac 2021
  • Microsoft Microsoft Office LTSC for Mac 2024
  • Microsoft Microsoft Word 2016

Classification

Weakness
  • CWE-349 Acceptance of Extraneous Untrusted Data With Trusted Data

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.