SYSTEM escalation via replaceable Fileset executable
Published Apr 21, 2025 · Updated Apr 21, 2025
Incorrect authorization in the FileWave Windows client before 16.0.0 allows local users to gain SYSTEM privileges through a crafted Fileset. In a non-default Blocker Script Fileset, a non-administrator can replace a deployed executable before verification restores it, and the client then runs the replacement as SYSTEM. Exploitation requires local user access, a writable deployed executable, and a Blocker Script that invokes it during the five-minute verification gap.
Summary
What happened
Incorrect authorization in the FileWave Windows client before 16.0.0 allows local users to gain SYSTEM privileges through a crafted Fileset. In a non-default Blocker Script Fileset, a non-administrator can replace a deployed executable before verification restores it, and the client then runs the replacement as SYSTEM. Exploitation requires local user access, a writable deployed executable, and a Blocker Script that invokes it during the five-minute verification gap.
The record
- CVE
- CVE-2025-43922
- Published
- Apr 21, 2025
- Updated
- Apr 21, 2025
- Vendor
- FileWave
- Product
- FileWave
- Classifications
- CWE-863, T1574.010
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 21, 2025CVE publishedPublication date reported by the CVE source.
- Apr 21, 2025Record 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=0 <16.0.0
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
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Technologies
Your stack
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Your stack
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