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Fencer Vulns
high 7.8

CVE-2025-59227 json

Microsoft Office Remote Code Execution Vulnerability

published 2025-10-14 12 mo ago modified 2026-10-18 21 d ago also EUVD-2025-34281

cvss
7.8
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 43%
public exploits
0
none known

Summary

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

Patch / fix

  • Microsoft Microsoft Office 2016 16.0.5522.1000
  • Microsoft Microsoft Office for Android 16.0.19328.20000
  • Microsoft Microsoft Office LTSC for Mac 2021 16.102.25101223
  • Microsoft Microsoft Office LTSC for Mac 2024 16.102.25101223

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
12 mo ago

Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/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 for Android
  • Microsoft Microsoft Office LTSC 2021
  • Microsoft Microsoft Office LTSC 2024
  • Microsoft Microsoft Office LTSC for Mac 2021
  • Microsoft Microsoft Office LTSC for Mac 2024

Classification

Weakness

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.