CVE-2026-71407: A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6 may allow…
CVE-2026-71407 · Severity: medium · CVSS 5.6 · Published 2026-08-12
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.
No. Junglewise Threat Intelligence has no report of CVE-2026-71407 being exploited in the wild.
How severe is CVE-2026-71407?
Medium severity, with a CVSS score of 5.6, published 12 August 2026.
Which products and versions are affected?
Fortinet FortiOS. The advisory does not name versions.
Is there a fix for CVE-2026-71407?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-71407?
Check whether you run Fortinet FortiOS. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.