FortiOS
CVE-2024-21762: FortiOS Out-of-Bound Write
A out-of-bounds write in Fortinet FortiOS versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.6, 7.0.0 through 7.0.13, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15, 6.0.0 through 6.0.17, FortiProxy versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.8, 7.0.0 through 7.0.14, 2.0.0 through 2.0.13, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6, 1.0.0 through 1.0.7 allows attacker to execute unauthorized code or commands via specifically 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 |
|---|---|
| FortiProxy 7.4.0 to 7.4.2 | 7.4.3 or later |
| FortiProxy 7.2.0 to 7.2.8 | 7.2.9 or later |
| FortiProxy 7.0.0 to 7.0.14 | 7.0.15 or later |
| FortiProxy 2.0.0 to 2.0.13 | 2.0.14 or later |
| FortiProxy 1.2.0 to 1.2.13 | Upgrade past 1.2.13; see the advisory |
| FortiProxy 1.1.0 to 1.1.6 | Upgrade past 1.1.6; see the advisory |
| FortiProxy 1.0.0 to 1.0.7 | Upgrade past 1.0.7; see the advisory |
| FortiOS 7.4.0 to 7.4.2 | 7.4.3 or later |
| FortiOS 7.2.0 to 7.2.6 | 7.2.7 or later |
| FortiOS 7.0.0 to 7.0.13 | 7.0.14 or later |
| FortiOS 6.4.0 to 6.4.14 | 6.4.15 or later |
| FortiOS 6.2.0 to 6.2.15 | 6.2.16 or later |
| FortiOS 6.0.0 to 6.0.17 | Upgrade past 6.0.17; see the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
A out-of-bounds write in Fortinet FortiOS versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.6, 7.0.0 through 7.0.13, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15, 6.0.0 through 6.0.17, FortiProxy versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.8, 7.0.0 through 7.0.14, 2.0.0 through 2.0.13, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6, 1.0.0 through 1.0.7 allows attacker to execute unauthorized code or commands via specifically crafted requests
Exploitation
CISA lists this CVE as exploited in the wild since 9 Feb 2024, including in ransomware campaigns.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 10 Oct 2026.