CVE-2026-109466 json
Microsoft Office SharePoint Elevation of Privilege Vulnerability
published yesterday modified 17h ago also EUVD-2026-121578
- cvss
- 8.0
- 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
Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over an adjacent network.
Patch / fix
- Microsoft Microsoft SharePoint Server Subscription Edition 16.0.20326.20278
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- yesterday
Exploit prediction
0.50% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.0 | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 8.0 | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Microsoft Microsoft SharePoint Server Subscription Edition
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-109466
vendor-advisory, patch
Sources
- CVE List CVE-2026-109466
- NVD CVE-2026-109466
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