Skip to content
OpenAdvisories
Critical · 9.8 Known exploited · Ransomware Scanner template Public exploit CVE-2025-53770 EUVD-2025-23309GHSA-xcrc-8vqv-vc8r

Microsoft SharePoint Server Remote Code Execution Vulnerability

Published Jul 20, 2025 · Updated Aug 4, 2026 · Assigned by microsoft

Vendor: Microsoft Product: Microsoft SharePoint Enterprise Server 2016 Product: Microsoft SharePoint Server 2019 Product: Microsoft SharePoint Server Subscription Edition

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.

Affected products

VendorProductAffectedFixed
Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.0 – < 16.0.5513.1001 16.0.5513.1001
Microsoft Microsoft SharePoint Server 2019 16.0.0 – < 16.0.10417.20037 16.0.10417.20037
Microsoft Microsoft SharePoint Server Subscription Edition 16.0.0 – < 16.0.18526.20508 16.0.18526.20508

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Metasploit 1 module

GitHub 45 repositories · most starred shown

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.

Advisories 3

References