FortiOS
CVE-2025-25248: Integer Overflow or Wraparound in FortiOS, FortiPAM and others
An Integer Overflow or Wraparound vulnerability [CWE-190] in FortiOS version 7.6.2 and below, version 7.4.7 and below, version 7.2.10 and below, 7.2 all versions, 6.4 all versions, FortiProxy version 7.6.2 and below, version 7.4.3 and below, 7.2 all versions, 7.0 all versions, 2.0 all versions and FortiPAM version 1.5.0, version 1.4.2 and below, 1.3 all versions, 1.2 all versions, 1.1 all versions, 1.0 all versions SSL-VPN RDP and VNC bookmarks may allow an authenticated user to affect the device SSL-VPN availability via crafted requests.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| FortiOS 7.6.0 to 7.6.2 | 7.6.3 or later |
| FortiOS 7.4.0 to 7.4.7 | 7.4.8 or later |
| FortiOS 7.2.0 to 7.2.10 | 7.2.11 or later |
| FortiOS 7.0.0 to 7.0.17 | Upgrade past 7.0.17; see the advisory |
| FortiOS 6.4.0 to 6.4.16 | Upgrade past 6.4.16; see the advisory |
| FortiPAM 1.5 | 1.5.1 or later |
| FortiPAM 1.4.0 to 1.4.2 | 1.4.3 or later |
| FortiPAM 1.3.0 to 1.3.1 | Upgrade past 1.3.1; see the advisory |
| FortiPAM 1.2 | See the advisory |
| FortiPAM 1.1.0 to 1.1.2 | Upgrade past 1.1.2; see the advisory |
| FortiPAM 1.0.0 to 1.0.3 | Upgrade past 1.0.3; see the advisory |
| FortiProxy 7.6.0 to 7.6.2 | 7.6.3 or later |
| FortiProxy 7.4.0 to 7.4.3 | 7.4.4 or later |
| FortiProxy 7.2.0 to 7.2.14 | Upgrade past 7.2.14; see the advisory |
| FortiProxy 7.0.0 to 7.0.21 | Upgrade past 7.0.21; see the advisory |
| FortiProxy 2.0.0 to 2.0.14 | Upgrade past 2.0.14; see the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
An Integer Overflow or Wraparound vulnerability [CWE-190] in FortiOS version 7.6.2 and below, version 7.4.7 and below, version 7.2.10 and below, 7.2 all versions, 6.4 all versions, FortiProxy version 7.6.2 and below, version 7.4.3 and below, 7.2 all versions, 7.0 all versions, 2.0 all versions and FortiPAM version 1.5.0, version 1.4.2 and below, 1.3 all versions, 1.2 all versions, 1.1 all versions, 1.0 all versions SSL-VPN RDP and VNC bookmarks may allow an authenticated user to affect the device SSL-VPN availability via crafted requests.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 10 Oct 2026.