CVE-2023-29357
Microsoft SharePoint Server Privilege Escalation Vulnerability
CVSS
—
No CVSS
EPSS
100.0%
p100
KEV
YES
Jan 10, 2024
Exploit Today
80
0-100
Published: — · Last modified: —
Product
Microsoft / SharePoint Server
Vulnerability
Microsoft SharePoint Server Privilege Escalation Vulnerability
Added to KEV
Jan 10, 2024
Remediate by
Jan 31, 2024
Known ransomware use
Yes
Summary 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.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notes
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29357; https://nvd.nist.gov/vuln/detail/CVE-2023-29357