Medium4.1Fortinet
Buffer overread in authd and wad daemon
FG-IR-26-154 Published Jul 14, 2026Updated by vendor Jul 14, 2026
Affected products & platforms
FortinetFortiGateFirewallFortiOSFortiProxy
Summary
CVSSv3 Score: 4.1 A buffer over-read vulnerability [CWE-126] in FortiOS, FortiProxy, and FortiSASE may allow an authenticated remote attacker to return a portion of device memory in the redirect response via submitting a specially crafted request. Revised on 2026-07-14 00:00:00
Affected versions
- FortiOS 7.6: 7.6.0 through 7.6.2
- FortiOS 7.4: 7.4.0 through 7.4.8
- FortiOS 7.2: 7.2 all versions
- FortiProxy 7.6: 7.6.0 through 7.6.5
- FortiProxy 7.4: 7.4.0 through 7.4.13
- FortiProxy 7.2: 7.2 all versions
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
- FortiOS 7.6: 7.6.4
- FortiOS 7.4: 7.4.9
- FortiOS 7.2: migrate to a fixed release
- FortiProxy 7.6: 7.6.6
- FortiProxy 7.4: 7.4.14
- FortiProxy 7.2: migrate to a fixed release
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Upgrade per the Affected/Solution table: FortiOS 7.6: 7.6.4; FortiOS 7.4: 7.4.9; FortiOS 7.2: migrate to a fixed release; FortiProxy 7.6: 7.6.6; FortiProxy 7.4: 7.4.14; ….
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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