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VulnerabilityPublished Updated

CVE-2025-24477: Fortinet FortiOS · Escalation of Privilege

Affects Fortinet FortiOSSource CVE Database V5

0

Public exploit available · CVSS 4.0 Medium.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
4.0Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 15% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:U/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Jul 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: evidence found.

    CVSS exploit maturity: proof of concept public

  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), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Fortinet FortiOSAffected
  • =7.6.0
  • =7.4.0
  • =7.2.4
Fixed in–

AI-suggested

  1. Immediately restrict CLI access on FortiOS devices to trusted administrators only, using network segmentation and access control lists to limit exposure.
  2. Monitor administrative access logs for unusual or unauthorized CLI command usage that could indicate exploitation attempts.
  3. Implement multi-factor authentication (MFA) for all administrative access to FortiOS devices to reduce the risk of credential compromise.
  4. Apply principle of least privilege to administrative accounts, ensuring users have only the permissions necessary for their roles.
  5. Stay alert for official Fortinet security advisories and patches addressing CVE-2025-24477 and apply updates promptly once available.
  6. Conduct internal vulnerability scans and penetration tests focusing on FortiOS devices to detect potential exploitation or misconfigurations.
  7. Consider deploying host-based intrusion detection systems (HIDS) on management workstations to detect suspicious activity related to FortiOS administration.

Description

A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.2, FortiOS 7.4.0 through 7.4.7, FortiOS 7.2.4 through 7.2.12 allows an attacker to escalate its privileges via a specially crafted CLI command

References

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