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5.1 Medium

CVE-2026-71407 A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6 may allow an…

Description

A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6 may allow an unauthenticated attacker who can bypass stack protection and ASLR to execute arbitrary code or commands in the context of the WAD daemon via crafted sockets, only if the explicit proxy is configured with Kerberos authentication and SOCKS enabled.

CVSS 3.1 detail

Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

Exploitable remotely over the network, without an account and without any user action; the impact on data or service is limited.

Attack vector
Network
Attack complexity
High
Privileges required
None
Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

Affected products and versions

Product Affected versions Fixed in
FortiOS 7.6 7.6.1 → 7.6.6 No fix stated
FortiPAM 1.8 1.8.0 → 1.8.4 No fix stated
FortiPAM 1.7 1.7.0 → 1.7.2 No fix stated
FortiPAM 1.6 1.6.0 → 1.6.2 No fix stated
FortiPAM 1.5 1.5.0 → 1.5.1 No fix stated
FortiPAM 1.4 1.4.0 → 1.4.3 No fix stated
FortiPAM 1.3 1.3.0 → 1.3.1 No fix stated
FortiPAM 1.2.0 No fix stated
FortiPAM 1.1 1.1.0 → 1.1.2 No fix stated
Show the 6 other branches
Product Affected versions Fixed in
FortiPAM 1.0 1.0.0 → 1.0.3 No fix stated
FortiProxy 7.6 7.6.0 → 7.6.4 No fix stated
FortiProxy 7.4 7.4.0 → 7.4.11 No fix stated
FortiProxy 7.2 7.2.0 → 7.2.16 No fix stated
FortiProxy 7.0 7.0.0 → 7.0.23 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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