Internet Shortcut Files Remote Code Execution Vulnerability

cisa required action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

1. 2025-06-10 0-day patched (Project Zero)
2. 2025-06-10 Added to CISA KEV
3. 2025-06-10 Published
4. 2025-06-11 First public exploit (Metasploit exploit/windows/fileformat/unc_url_cve_2025_33053)
5. 2025-07-01 CISA patch deadline
6. 2025-08-20 CISA SSVC: exploitation active

Added

17 mo ago (2025-06-10)

Patch by

2025-07-01 (16 mo ago)

Ransomware

Not known

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Vendor, product

Microsoft, Windows

CISA name

Microsoft Windows External Control of File Name or Path Vulnerability

Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.

Patched

2025-06-10

Details

project zero tracker

How it is exploited and what it leads to, in MITRE ATT&CK terms.

• T1566.001 Spearphishing Attachment exploitation
• T1059 Command and Scripting Interpreter primary impact
• T1041 Exfiltration Over C2 Channel secondary impact
• T1056.001 Keylogging secondary impact
• T1543 Create or Modify System Process secondary impact

kev release 2025-07-28, att&ck v16.1. KEV to ATT&CK mappings by the MITRE Center for Threat-Informed Defense (Mappings Explorer, Apache-2.0). © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. Terms of use

Exploitation

Active, exploited in the wild

Automatable

no

Technical impact

total

Assessed

14 mo ago (2025-08-20)

87.13% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-08).

• Metasploit exploit/windows/fileformat/unc_url_cve_2025_33053 CVE-2025-33053 Exploit via Malicious .URL File and WebDAV metasploit exploit, normal rank, 2025-06-11
• research.checkpoint.com https://research.checkpoint.com/2025/stealth-falcon-zero-day/ referenced PoC, tagged "exploit" by a source, unverified
• vicarius.io https://www.vicarius.io/vsociety/posts/cve-2025-33053-mitigation-script-remote-code-execution-vulnerability-in-microsoft-webdav referenced PoC, tagged "exploit" by a source, unverified
• vicarius.io https://www.vicarius.io/vsociety/posts/cve-2025-33053-detection-script-remote-code-execution-vulnerability-in-microsoft-webdav referenced PoC, tagged "exploit" by a source, unverified

• Microsoft Windows 10 Version 1507
• Microsoft Windows 10 Version 1607
• Microsoft Windows 10 Version 1809
• Microsoft Windows 10 Version 21H2
• Microsoft Windows 10 Version 22H2
• Microsoft Windows 11 version 22H2
• Microsoft Windows 11 version 22H3
• Microsoft Windows 11 Version 23H2
• Microsoft Windows 11 Version 24H2
• Microsoft Windows Server 2008 R2 Service Pack 1
• Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)
• Microsoft Windows Server 2008 Service Pack 2
• Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)
• Microsoft Windows Server 2012
• Microsoft Windows Server 2012 (Server Core installation)
• Microsoft Windows Server 2012 R2
• Microsoft Windows Server 2012 R2 (Server Core installation)
• Microsoft Windows Server 2016
• Microsoft Windows Server 2016 (Server Core installation)
• Microsoft Windows Server 2019
• Microsoft Windows Server 2019 (Server Core installation)
• Microsoft Windows Server 2022
• Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
• Microsoft Windows Server 2025
• Microsoft Windows Server 2025 (Server Core installation)

Weakness

• CWE-73 External Control of File Name or Path

• msrc.microsoft.com /update-guide/vulnerability/CVE-2025-33053

  vendor-advisory, patch

• research.checkpoint.com /2025/stealth-falcon-zero-day/

  exploit, technical-description

• vicarius.io /vsociety/posts/cve-2025-33053-mitigation-script-remote-code-execution-vulnerability-in-microsoft-webdav

  exploit, mitigation, third-party-advisory

• vicarius.io /vsociety/posts/cve-2025-33053-detection-script-remote-code-execution-vulnerability-in-microsoft-webdav

  exploit, third-party-advisory

• cisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-33053

  government-resource, us-government-resource

• darkreading.com /vulnerabilities-threats/stealth-falcon-apt-exploits-microsoft-rce-zero-day-mideast

  press/media-coverage

• therecord.media /microsoft-cisa-zero-day-turkish-defense-org

  press/media-coverage

• bleepingcomputer.com /news/security/stealth-falcon-hackers-exploited-windows-webdav-zero-day-to-drop-malware/

  press/media-coverage

• theregister.com /2025/06/10/microsoft_patch_tuesday_june/

  press/media-coverage

• CVE List CVE-2025-33053
• NVD CVE-2025-33053

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.