CVE-2026-71407

MEDIUMCVSS 5.6/10

Last modified

CVE-2026-71407 is a medium-severity vulnerability rated 5.6/10 on the CVSS scale. 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..

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.

Metrics

CVSS 3.1
5.6/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
FortinetFortiOS>= 7.6.1, <= 7.6.6
FortinetFortiPAM>= 1.8.0, <= 1.8.4; >= 1.7.0, <= 1.7.2; >= 1.6.0, <= 1.6.2; >= 1.5.0, <= 1.5.1; >= 1.4.0, <= 1.4.3; >= 1.3.0, <= 1.3.1; 1.2.0; >= 1.1.0, <= 1.1.2; >= 1.0.0, <= 1.0.3
FortinetFortiProxy>= 7.6.0, <= 7.6.4; >= 7.4.0, <= 7.4.11; >= 7.2.0, <= 7.2.16; >= 7.0.0, <= 7.0.23

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is 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 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.
How severe is CVE-2026-71407?
CVE-2026-71407 has a CVSS score of 5.6/10 (MEDIUM severity).
How do I fix CVE-2026-71407?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST