What’s Vulnerable › Vulnerabilities
CVE-2026-39811
- Severity: medium (CVSS 4.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-04-14 · updated 2026-10-26
- Weakness: CWE-190
Description
A integer overflow or wraparound vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4 all versions, FortiWeb 7.2 all versions, FortiWeb 7.0 all versions may allow attacker to denial of service via <insert attack vector here>
Affected products
- Fortinet FortiWeb: from 7.0.0 through 7.0.13; from 7.2.0 through 7.2.13; from 7.4.0 through 7.4.12; from 7.6.0 before 7.6.7; from 8.0.0 before 8.0.4 — fixed in 7.6.7, 8.0.4
How to fix
Upgrade to a fixed version: Fortinet FortiWeb 7.6.7, 8.0.4. Check the vendor advisory for mitigations.
References
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