FortinetCVE-2026-59837
Fortinet FortiOS: stack buffer overflow
Medium6.6CVE-2026-59837 · Published Jul 14, 2026 · updated Aug 11, 2026
A stack-based buffer overflow vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2 all versions, FortiPAM 1.8.0 through 1.8.2, FortiPAM 1.7 all versions, FortiPAM 1.6 all versions, FortiPAM 1.5 all versions, FortiPAM 1.4 all versions, FortiPAM 1.3 all versions, FortiPAM 1.2 all versions, FortiPAM 1.1 all versions, FortiPAM 1.0 all versions, FortiProxy 7.4.0 through 7.4.13, FortiProxy 7.2 all versions may allow a privileged authenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands via crafted HTTP requests.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| FortiOS Product | >= 7.4.0, <= 7.4.1 | No fix yet |
| >= 7.2.0, <= 7.2.13 | No fix yet | |
| >= 7.0.0, <= 7.0.19 | No fix yet | |
| >= 6.4.0, <= 6.4.16 | No fix yet | |
| FortiPAM Product | >= 1.8.0, <= 1.8.2 | No fix yet |
| >= 1.7.0, <= 1.7.2 | No fix yet | |
| >= 1.6.0, <= 1.6.2 | No fix yet | |
| >= 1.5.0, <= 1.5.1 | No fix yet | |
| FortiProxy Product | >= 7.4.0, <= 7.4.13 | No fix yet |
| >= 7.2.0, <= 7.2.16 | No fix yet | |
| FortiSASE Product | >= 26.1.1, <= 26.1.2 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-121
More Fortinet advisories
All Fortinet| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Jul 14 | Fortinet FortiOS: path traversal | Medium5.5 | No fix yet |
| Jul 14 | Fortinet FortiOS: information disclosure | Medium4.3 | No fix yet |
| Jul 14 | Fortinet FortiSIEMWindowsAgent: privilege escalation | High7.5 | No fix yet |
| Jul 14 | Fortinet FortiSandbox: unauthenticated attacker could access the VNC server of... | High8.6 | No fix yet |
| Jul 14 | Fortinet FortiClientEMS: improper certificate validation | High7.5 | No fix yet |
| Jul 14 | Fortinet FortiOS: cross-site scripting | Medium6.1 | No fix yet |