Microsoft SharePoint Server Privilege Escalation
Microsoft SharePoint Server
Microsoft SharePoint Server contains an unspecified vulnerability that allows an unauthenticated attacker, who has gained access to spoofed JWT authentication tokens, to use them for executing a network attack. This attack bypasses authentication, enabling the attacker to gain administrator privileges. Added to the CISA KEV catalog on 2024-01-10. CISA lists known use in ransomware campaigns. CVE-2023-29357 was assigned before 2024; the KEV listing came in 2024.
Why this severity: CVSS 9.8 (v3.1, CNA), actively exploited (CISA KEV); known ransomware use
- Started
- Jan 10, 2024
- Closed
- Jan 10, 2024
Affected
- See vendor advisory (versions are not listed in the KEV record)
Fixed in
- See vendor advisory linked in sources
Timeline1
CISA added CVE-2023-29357 to the KEV catalog (federal deadline 2024-01-31)
Source
Advisories3
Notes & caveats
Derived from the CISA KEV JSON feed (catalogVersion 2026.10.21); CVSS from the CVE record (cveawg.mitre.org). startedAt is the CVE publication date when it fell in 2024 before the KEV listing, else the KEV dateAdded; exploitation may have begun earlier. closedAt is the KEV listing date (a fix or mitigation was available then unless noted).
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