Code execution via missing MSC file warning
Published Mar 11, 2025 · Updated Aug 5, 2026
Improper MSC file handling in Microsoft Windows allows remote attackers to execute code as the current user after user interaction. Microsoft Management Console loads an unexpected MSC file without warning, allowing the file to evade reputation protections. Exploitation requires the target to visit a malicious page or open a malicious file, and code runs with the current user's privileges.
Summary
What happened
Improper MSC file handling in Microsoft Windows allows remote attackers to execute code as the current user after user interaction. Microsoft Management Console loads an unexpected MSC file without warning, allowing the file to evade reputation protections. Exploitation requires the target to visit a malicious page or open a malicious file, and code runs with the current user's privileges.
The record
- CVE
- CVE-2025-26633
- Published
- Mar 11, 2025
- Updated
- Aug 5, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-707, T1218.014, T1204.002
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 11, 2025Exploitation reportedCISA Known Exploited Vulnerabilities catalog entry
- Mar 11, 2025CVE publishedPublication date reported by the CVE source.
- Aug 5, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.10240.0 <10.0.10240.20947
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Reported exploitation
- Ransomware-associated exploitationransomware
- CISA Known Exploited Vulnerabilities catalog entryknown exploited catalog
Technologies
Your stack
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Your stack
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