SB2025072001 - Remote code execution in Microsoft SharePoint Server
Published: July 20, 2025 Updated: November 14, 2025
Security Bulletin ID
SB2025072001
Severity
Critical
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Deserialization of Untrusted Data (CVE-ID: CVE-2025-53770)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note, the vulnerability is being exploited in the wild.
Remediation
Install update from vendor's website.