Admin code execution via CAPWAP format string
Published Feb 10, 2026 · Updated Feb 10, 2026
Format string injection in Fortinet FortiOS allows attackers with administrative access to execute unauthorized code or commands through configuration. CAPWAP fast-failover mode treats attacker-controlled configuration text as a format string rather than fixed data; Fortinet has not named the affected function or daemon. Exploitation requires high-privileged administrative access and can run code or commands in the FortiOS context without further user interaction.
Summary
What happened
Format string injection in Fortinet FortiOS allows attackers with administrative access to execute unauthorized code or commands through configuration. CAPWAP fast-failover mode treats attacker-controlled configuration text as a format string rather than fixed data; Fortinet has not named the affected function or daemon. Exploitation requires high-privileged administrative access and can run code or commands in the FortiOS context without further user interaction.
The record
- CVE
- CVE-2025-64157
- Published
- Feb 10, 2026
- Updated
- Feb 10, 2026
- Vendor
- Fortinet
- Product
- FortiOS
- Classifications
- CWE-134, T1059
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Feb 10, 2026CVE publishedPublication date reported by the CVE source.
- Feb 10, 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=7.0.0 <=7.0.19
- Affected versionversion=7.2.0 <=7.2.11
- Affected versionversion=7.4.0 <=7.4.9
- Affected versionversion=7.6.0 <=7.6.4
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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