8.8high
CVE-2026-88198
Microsoft Office SharePoint Elevation of Privilege Vulnerability
Published 24 d ago · modified 6 d ago · JSON
CVSS
8.8
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
0.7%
percentile 54%
Public exploits
0
none known
Summary
Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
CISA SSVC assessment
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 24 d ago
Exploit prediction (EPSS)
0.71% probability of exploitation in the next 30 days, higher than 54% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/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-2026-88198 · vendor-advisory, patch
Sources
- CVE List: CVE-2026-88198
- NVD: CVE-2026-88198
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