CVE-2026-63512 json
Microsoft SharePoint Server Tampering Vulnerability
published 2026-08-11 2 mo ago modified 2026-10-30 9 d ago also EUVD-2026-56296
- cvss
- 6.5
- 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 54%
- public exploits
- 0
- none known
Summary
Incorrect authorization in Microsoft Office SharePoint allows an authorized attacker to perform tampering over a network.
Patch / fix
- Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.5565.1001
- Microsoft Microsoft SharePoint Server 2019 16.0.10417.20198
- Microsoft Microsoft SharePoint Server Subscription Edition 16.0.19725.20522
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
Affected products
- Microsoft Microsoft SharePoint Enterprise Server 2016
- Microsoft Microsoft SharePoint Server 2019
- Microsoft Microsoft SharePoint Server Subscription Edition
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-63512
vendor-advisory, patch
Sources
- CVE List CVE-2026-63512
- NVD CVE-2026-63512
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.