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Fencer Vulns
high 7.8

CVE-2025-21402 json

Microsoft Office OneNote Remote Code Execution Vulnerability

published 2025-01-14 21 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-2462

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

Microsoft Office OneNote Remote Code Execution Vulnerability

Patch / fix

  • Microsoft Microsoft Office LTSC for Mac 2021 16.93.25011212
  • Microsoft Microsoft Office LTSC for Mac 2024 16.93.25011212
  • Microsoft Microsoft OneNote 16.92.24120731

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
21 mo ago

Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% 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/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 Office LTSC for Mac 2021
  • Microsoft Microsoft Office LTSC for Mac 2024
  • Microsoft Microsoft OneNote

Classification

Weakness
  • CWE-641 Improper Restriction of Names for Files and Other Resources

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.