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Fencer Intel
high 8.2

CVE-2026-44822 json

Microsoft Excel Information Disclosure Vulnerability

published 5mo ago modified last mo. also EUVD-2026-35537

cvss
8.2
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 44%
public exploits
0
none known

Summary

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

Patch / fix

  • Microsoft Microsoft Excel 2016 16.0.5556.1001
  • Microsoft Microsoft Office 365 for Mac 16.110.26061317
  • Microsoft Microsoft Office LTSC for Mac 2021 16.110.26061317
  • Microsoft Microsoft Office LTSC for Mac 2024 16.110.26061317
  • Microsoft Office Online Server 16.0.10417.20137

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CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
4mo ago

Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C
CNA 3.1 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Affected products

  • Microsoft Microsoft 365 Apps for Enterprise
  • Microsoft Microsoft Excel 2016
  • Microsoft Microsoft Office 2019
  • Microsoft Microsoft Office 365 for Mac
  • 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 Office Online Server

Classification

Weakness

References

Sources

Fencer Intel 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.