FortiMail
CVE-2023-33302: Classic buffer overflow in FortiNDR, FortiMail
A buffer copy without checking size of input ('classic buffer overflow') in Fortinet FortiMail webmail and administrative interface version 6.4.0 through 6.4.4 and before 6.2.6 and FortiNDR administrative interface version 7.2.0 and before 7.1.0 allows an authenticated attacker with regular webmail access to trigger a buffer overflow and to possibly execute unauthorized code or commands via specifically crafted HTTP 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 |
|---|---|
| FortiNDR 7.2 | 7.2.1 or later |
| FortiNDR 7.1 | See the advisory |
| FortiNDR 7.0.0 to 7.0.6 | Upgrade past 7.0.6; see the advisory |
| FortiNDR 1.5.0 to 1.5.3 | Upgrade past 1.5.3; see the advisory |
| FortiNDR 1.4 | See the advisory |
| FortiNDR 1.3.0 to 1.3.1 | Upgrade past 1.3.1; see the advisory |
| FortiNDR 1.2 | See the advisory |
| FortiNDR 1.1 | See the advisory |
| FortiMail 6.4.0 to 6.4.4 | 6.4.5 or later |
| FortiMail 6.2.0 to 6.2.6 | 6.2.7 or later |
| FortiMail 6.0.0 to 6.0.10 | 6.0.11 or later |
| FortiMail 5.4.0 to 5.4.12 | Upgrade past 5.4.12; see the advisory |
| FortiMail 5.3.12 to 5.3.13 | Upgrade past 5.3.13; see the advisory |
| FortiMail 5.3.0 to 5.3.10 | Upgrade past 5.3.10; see the advisory |
| FortiMail 5.2.0 to 5.2.10 | Upgrade past 5.2.10; see the advisory |
| FortiMail 5.1.0 to 5.1.7 | Upgrade past 5.1.7; see the advisory |
| FortiMail 5.0.0 to 5.0.11 | Upgrade past 5.0.11; see the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
A buffer copy without checking size of input ('classic buffer overflow') in Fortinet FortiMail webmail and administrative interface version 6.4.0 through 6.4.4 and before 6.2.6 and FortiNDR administrative interface version 7.2.0 and before 7.1.0 allows an authenticated attacker with regular webmail access to trigger a buffer overflow and to possibly execute unauthorized code or commands via specifically crafted HTTP requests.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 10 Oct 2026.