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CVE-2026-126261VulnerabilityPublished

Fortinet FortiManager 8.0.0, FortiManager · Improper Authorization Vulnerability

Source GCVE Database

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Authoritative record:CVE-2026-126261· Critical 9.0

Not known to be exploited · CVSS 9.0 Critical · patch available : patch FortiManager as a priority.

Data as of 11 Nov 2026, 01:21 UTC

CVSS 3.1 base score
9.0Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (fortinet)CVSS 3.19.0
Patch
Available
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
FortinetFortiManagerAffected
  • >=7.6.0 <=7.6.7
  • >=7.4.0 <=7.4.5
  • >=7.2.0 <=7.2.8
  • =8.0.0
Fixed in–

AI-suggested

If you cannot patch yet, restrict network access to the FGFM port to trusted administrators only and monitor for any suspicious activity targeting this service.

Description

An improper authorization vulnerability exists in Fortinet FortiManager versions 8.0.0, 7.6.0 through 7.6.7, 7.4.0 through 7.4.5, and 7.2.0 through 7.2.8. This flaw may allow an unauthenticated attacker with network access to the FGFM port to execute arbitrary code or commands via specially crafted FGFM packets. The vulnerability has a critical severity with a CVSS score of 9.8.

References

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