Vulnerability · Published Jul 14, 2026 · Assigned by fortinet
CVE-2026-59837
Medium 5.9
In plain English
A medium-severity stack buffer overflow in FortiOS from Fortinet. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).
Official description
A stack-based buffer overflow vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Fortinet | FortiOS | 7.4.0 – through 7.4.17.2.0 – through 7.2.147.0.0 – through 7.0.196.4.0 – through 6.4.16 |
| Fortinet | FortiProxy | 7.4.0 – through 7.4.137.2.0 – through 7.2.16 |
| Fortinet | FortiPAM | 1.8.0 – through 1.8.21.7.0 – through 1.7.21.6.0 – through 1.6.21.5.0 – through 1.5.11.4.0 – through 1.4.31.3.0 – through 1.3.11.2.01.1.0 – through 1.1.2 |
Weakness: CWE-121 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C