Microsoft Windows External Control of File Name or Path Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2025-06-10
• EPSS: 87% chance of exploitation in the next 30 days (higher than 100% of CVEs)

[ Description ]Official description

External control of file name or path in Internet Shortcut Files allows an unauthorized attacker to execute code over a network.

CISA: Microsoft Windows contains an external control of file name or path vulnerability that could allow an attacker to execute code from a remote WebDAV location specified by the WorkingDirectory attribute of Internet Shortcut files.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 1 Jul 2025): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• msrc.microsoft.com/update-guide/vulnerability/CVE-2025-33053Vendor Advisory
• research.checkpoint.com/2025/stealth-falcon-zero-dayExploitTechnical Description
• therecord.media/microsoft-cisa-zero-day-turkish-defense-orgPress/Media Coverage
• www.bleepingcomputer.com/news/security/stealth-falcon-hackers-exploited-windows-webdav-…Press/Media Coverage
• www.darkreading.com/vulnerabilities-threats/stealth-falcon-apt-exploits-microsoft-rce-z…Press/Media Coverage
• www.theregister.com/2025/06/10/microsoft_patch_tuesday_junePress/Media Coverage
• www.vicarius.io/vsociety/posts/cve-2025-33053-detection-script-remote-code-execution-vu…ExploitThird Party Advisory
• www.vicarius.io/vsociety/posts/cve-2025-33053-mitigation-script-remote-code-execution-v…ExploitMitigationThird Party Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource