PSIRTStack-based Buffer Overflow in API protection
Summary
A Stack-based Buffer Overflow vulnerability [CWE-121] in FortiWeb may allow a remote authenticated attacker to execute arbitrary code or commands via crafted HTTP requests. Success of the attack is conditioned to bypassing stack protection and ASLR.
| Version | Affected | Solution |
|---|---|---|
| FortiWeb 8.0 | 8.0.0 through 8.0.2 | Upgrade to 8.0.3 or above |
| FortiWeb 7.6 | 7.6.0 through 7.6.6 | Upgrade to 7.6.7 or above |
| FortiWeb 7.4 | 7.4 all versions | Migrate to a fixed release |
| FortiWeb 7.2 | 7.2 all versions | Migrate to a fixed release |
| FortiWeb 7.0 | 7.0.2 through 7.0.12 | Migrate to a fixed release |
Acknowledgement
Fortinet is pleased to thank Sina Kheirkhah (SinSinology) of watchTowr (watchTowrcyber) for reporting this vulnerability under responsible disclosure.Timeline
2026-03-10: Initial publication