Medium4.4Fortinet Updated
Integer Overflow Denial of Service in administrative interface
FG-IR-26-108 Published Apr 14, 2026Updated by vendor Apr 14, 2026
CVE-2026-39811
Affected products & platforms
FortinetFortiWeb
Summary
CVSSv3 Score: 4.4 An Integer Overflow or Wraparound vulnerability [CWE-190] in FortiWeb may allow a privileged authenticated attacker to perform a denial of service of the system via crafted HTTP requests. Revised on 2026-04-14 00:00:00
Affected versions
- FortiWeb 8.0: 8.0.0 through 8.0.3
- FortiWeb 7.6: 7.6.0 through 7.6.6
- FortiWeb 7.4: 7.4 all versions
- FortiWeb 7.2: 7.2 all versions
- FortiWeb 7.0: 7.0 all versions
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Fixed versions
- FortiWeb 8.0: 8.0.4
- FortiWeb 7.6: 7.6.7
- FortiWeb 7.4: migrate to a fixed release
- FortiWeb 7.2: migrate to a fixed release
- FortiWeb 7.0: migrate to a fixed release
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Upgrade per the Affected/Solution table: FortiWeb 8.0: 8.0.4; FortiWeb 7.6: 7.6.7; FortiWeb 7.4: migrate to a fixed release; FortiWeb 7.2: migrate to a fixed release; FortiWeb 7.0: migrate to a fixed release.
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
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