Local privilege escalation via undisclosed input validation
Published Aug 12, 2025 · Updated Feb 26, 2026
Improper input validation in Intel i40e Linux Base Driver before 2.28.5 allows local users to escalate privileges. Intel has not published the affected function, accepted input, or validation operation that mishandles that input. Exploitation requires local low-privileged access and high-complexity conditions, and grants elevated control that can alter system state or interrupt service.
Summary
What happened
Improper input validation in Intel i40e Linux Base Driver before 2.28.5 allows local users to escalate privileges. Intel has not published the affected function, accepted input, or validation operation that mishandles that input. Exploitation requires local low-privileged access and high-complexity conditions, and grants elevated control that can alter system state or interrupt service.
The record
- CVE
- CVE-2025-21086
- Published
- Aug 12, 2025
- Updated
- Feb 26, 2026
- Vendor
- Topcon Positioning Systems, Inc.
- Product
- i40e Linux Base Driver
- Classifications
- CWE-20, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 12, 2025CVE publishedPublication date reported by the CVE source.
- Feb 26, 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=before version 2.28.5
What conditions does exploitation require?
What is affected?
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.
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Technologies
Your stack
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Your stack
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