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6.9 Medium

CVE-2025-53843 A stack-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8,…

Description

A stack-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions allows attacker to execute unauthorized code or commands via specially crafted packets

Affected products and versions

Product Affected versions Fixed in
FortiOS 7.6 7.6.0 → 7.6.3 No fix stated
FortiOS 7.4 7.4.0 → 7.4.8 No fix stated
FortiOS 7.2 7.2.0 → 7.2.12 No fix stated
FortiOS 7.0 7.0.0 → 7.0.18 No fix stated
FortiOS 6.4 6.4.0 → 6.4.16 No fix stated
RUGGEDCOM APE1808 Versions not published

Other CVEs of FortiOS

The 180 CVEs of FortiOS →
CVE-2026-106174 A improper locking vulnerability in Fortinet FortiOS 8.0.0, FortiOS 7.6.4 through 7.6.6 may allow an unauthenticated… 6.7 Medium CVE-2026-106175 A Double Free vulnerability [CWE-415] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.8, FortiOS 7.4 all versions,… 2.1 Low CVE-2026-84392 A NULL Pointer Dereference vulnerability [CWE-476] vulnerability in Fortinet FortiOS 7.4 all versions, FortiOS 7.2 all… 2.5 Low CVE-2026-84393 A improper validation of certificate with host mismatch vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6,… 7.3 High
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