CVE-2025-53770
Actively exploited. CVE-2025-53770 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-07-20) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2025-53770 is indexed in Metasploit, Exploit-DB, GitHub PoC and Nuclei. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
[Update on July 23, 2025] On July 20, 2025, Microsoft released patches for a vulnerability of insufficient path traversal affecting SharePoint Enterprise Server 2016, SharePoint Server 2019 and...
CSIRTS triage
- What
- There is a vulnerability of insufficient path traversal.
- Who is affected
- Deployments of SharePoint Enterprise Server 2016 and SharePoint Server 2019.
- Urgency
- Remediation is urgent due to confirmed exploitation.
- Action
- Apply the patches released on July 20, 2025.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2025-53770 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- MetasploitA Metasploit Framework module targets this CVE — weaponized, point-and-click exploitation.look it up ↗
- Exploit-DBA public exploit is published in the Exploit-DB archive.look it up ↗
- GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗
- NucleiA nuclei-templates detection/PoC template exists for this CVE.look it up ↗
Advisory coverage (2)
- unknown[Update] Multiple vulnerabilities in Microsoft SharePoint (July 21, 2025)cert-fr-alerte · 2025-07-21
- criticalexploitedCVE-2025-53770: Microsoft SharePoint Deserialization of Untrusted Data Vulnerabilitycisa-kev · 2025-07-20
External references
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[](https://www.csirts.com/cve/CVE-2025-53770)