CVE-2023-29357
CISA KEVPublished January 10, 2024 · Updated April 3, 2026
high
Official Description+
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.
Affected Products
| Vendor | Product |
|---|---|
| Microsoft | SharePoint Server |
Patch Status
Patch by 2024-01-31
Recommended Actions
- Check if your systems use any of the affected products listed above.
- Apply vendor patches immediately if available.
- This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
- Monitor vendor advisories for updates and additional mitigations.
- Review logs for indicators of compromise related to CVE-2023-29357.