CVE-2026-71407

At a glance

Severity: MEDIUM 5.1
EPSS: EPSS 0.51 % · percentile 44 (2026-10-27)
State: PUBLISHED
Published: 2026-08-12
Updated: 2026-10-15
Assigner: fortinet
NVD status: Modified

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 5.1	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	fortinet
CVSS 3.1	MEDIUM 5.6	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L	NVD · psirt@fortinet.com (Secondary)
CVSS 3.1	HIGH 8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-121

European references

ENISA EUVD · EUVD-2026-57191
GCVE · GCVE-0-2026-71407

CERT-FR advisories

CERTFR-2026-AVI-1015 — Multiples vulnérabilités dans les produits Fortinet · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* ≥ 7.6.1 < 7.6.7

Affected products

Product	Versions
Fortinet · FortiOS	affected 7.6.1 ≤ 7.6.6
Fortinet · FortiPAM	affected 1.8.0 ≤ 1.8.4 ; affected 1.7.0 ≤ 1.7.2 ; affected 1.6.0 ≤ 1.6.2 ; affected 1.5.0 ≤ 1.5.1 ; affected 1.4.0 ≤ 1.4.3 ; affected 1.3.0 ≤ 1.3.1
Fortinet · FortiProxy	affected 7.6.0 ≤ 7.6.4 ; affected 7.4.0 ≤ 7.4.11 ; affected 7.2.0 ≤ 7.2.16 ; affected 7.0.0 ≤ 7.0.23

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD