Microsoft SharePoint Server Remote Code Execution Vulnerability
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- Fix
- Fixed in 16.0.5513.1001, 16.0.10417.20037, 16.0.18526.20508
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
On-premises Microsoft SharePoint Server is affected. An unauthorized attacker on the network could exploit the software's mishandling of untrusted data to run their own code on the server.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network. Microsoft is aware that an exploit for CVE-2025-53770 exists in the wild. Microsoft is preparing and fully testing a comprehensive update to address this vulnerability. In the meantime, please make sure that the mitigation provided in this CVE documentation is in place so that you are protected from exploitation.
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- Microsoft Microsoft SharePoint Enterprise Server 2016
From 16.0.0 · fixed in 16.0.5513.1001
- Microsoft Microsoft SharePoint Server 2019
From 16.0.0 · fixed in 16.0.10417.20037
- Microsoft Microsoft SharePoint Server Subscription Edition
From 16.0.0 · fixed in 16.0.18526.20508