Medium [CVE-2026-39811] Integer Overflow Denial of Service in administrative interface
This medium-severity Fortinet advisory covers CVE-2026-39811 affecting FortiWeb.
Android app · Google Play
Monitor future Fortinet CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.
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
- 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 2 months ago·verify at source
- 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 2 months ago·verify at source
Mitigation checklist
- 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 2 months ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.