Continued SSL-VPN access via unexpired sessions
Published Dec 9, 2025 · Updated May 12, 2026
Insufficient session expiration in Fortinet FortiOS 6.4, 7.0, 7.2, and 7.4.0 allows attackers to retain SSL-VPN access after a password change. The SSL-VPN session lifecycle does not invalidate an already active session when the associated user password changes, so that session continues to authorize access to network resources. Exploitation requires a session established before the password change and particular conditions outside the attacker’s control; Fortinet has not disclosed those conditions.
Summary
What happened
Insufficient session expiration in Fortinet FortiOS 6.4, 7.0, 7.2, and 7.4.0 allows attackers to retain SSL-VPN access after a password change. The SSL-VPN session lifecycle does not invalidate an already active session when the associated user password changes, so that session continues to authorize access to network resources. Exploitation requires a session established before the password change and particular conditions outside the attacker’s control; Fortinet has not disclosed those conditions.
The record
- CVE
- CVE-2025-62631
- Published
- Dec 9, 2025
- Updated
- May 12, 2026
- Vendor
- Fortinet
- Product
- FortiOS
- Classifications
- CWE-613, T1550.004
- Attack vector
- network
- Privileges
- Unavailable
Timeline
How it unfolded
- Dec 9, 2025CVE publishedPublication date reported by the CVE source.
- May 12, 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=6.4.0 <=6.4.16
- Affected versionversion=7.0.0 <=7.0.19
- Affected versionversion=7.2.0 <=7.2.13
- Affected versionversion=7.4.0
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.
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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