CVE-2026-44822 json
Microsoft Excel Information Disclosure Vulnerability
published 2026-06-09 5 mo ago modified 2026-09-24 46 d ago 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
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).
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
-
- CWE-125 Out-of-bounds Read
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-44822
vendor-advisory, patch
Sources
- CVE List CVE-2026-44822
- NVD CVE-2026-44822
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.