A out-of-bounds write vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow a…

published 2026-11-11 13h ago modified 2026-11-11 12h ago also EUVD-2026-123889

cvss: 8.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: —; no EPSS score yet
public exploits: 0; none known

A out-of-bounds write vulnerability in Fortinet FortiAuthenticator 8.0.0 through 8.0.3, FortiAuthenticator 6.6.0 through 6.6.10 may allow an unauthenticated attacker to execute unauthorized code or commands via http requests, should the attacker be able to defeat ASLR protections.

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CVSS scores

assigned by	version	score	vector
CNA	3.1	8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
CNA	3.1	8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Fortinet FortiAuthenticator

Classification

Weakness

CWE-787 Out-of-bounds Write

Technology feeds

Fortinet rss critical rss

References

fortiguard.fortinet.com /psirt/FG-IR-26-259

Sources

CVE List CVE-2026-126245
NVD CVE-2026-126245

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