Microsoft SharePoint Server Privilege Escalation Vulnerability
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.
- Vendor
- Microsoft
- Product
- SharePoint Server
- CVSS
- 9.8
- EPSS (exploit probability)
- 99.6%
- Status
- kevransomware use
- CISA patch-by (BOD 22-01)
- Published
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 CISA’s Known Exploited Vulnerabilities catalog on 2024-01-10. Required action per CISA: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Due date: 2024-01-31.
This is an auto-synced KEV catalog record pending a full 0dayNews write-up — see CISA’s KEV catalog and the NVD record linked above for primary sources.