What’s Vulnerable › Vulnerabilities
CVE-2021-36173
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-12-08 · updated 2026-06-17
- Weakness: CWE-787
Description
A heap-based buffer overflow in the firmware signature verification function of FortiOS versions 7.0.1, 7.0.0, 6.4.0 through 6.4.6, 6.2.0 through 6.2.9, and 6.0.0 through 6.0.13 may allow an attacker to execute arbitrary code via specially crafted installation images.
Affected products
- Fortinet FortiOS (FortiGate): from 6.0.0 through 6.0.13; from 6.2.0 through 6.2.9; from 6.4.0 through 6.4.6; 7.0.0, 7.0.1
References
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