Medium [CVE-2026-40688] Out-Of-Bounds Write in administrative interface
This medium-severity Fortinet advisory covers CVE-2026-40688 affecting FortiWeb.
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Summary
CVSSv3 Score:
6.7
An out-of-bounds write vulnerability [CWE-787] in FortiWeb CGI daemon may allow a remote privileged attacker to execute arbitrary code or command via crafted HTTP requests.
Revised on 2026-04-15 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: 7.4.0 through 7.4.11
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: 7.4.12
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: 7.4.12.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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