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CVE-2023-29357: Microsoft SharePoint Server Privilege Escalation Vulnerability
Microsoft SharePoint Server · in CISA KEV since 2024-01-10
2024-01-10added to KEV
2024-01-31federal remediation due date
99.98%EPSS exploit probability (30 days) 100.0th percentile
9.8 CRITICALCVSS 3.1
Knownknown ransomware use
210days from NVD publication to KEV
What it is
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.
Required action (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
| CWE | CWE-303 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD published | 2023-06-14 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2023-29357.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.