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CVE-2023-42788VulnerabilityPublished Updated

CVE-2023-42788: Fortinet FortiAnalyzer · Execute unauthorized code or commands

Affects Fortinet FortiAnalyzerSource CVE Database V5

0

Not known to be exploited · CVSS 7.6 High.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
7.6High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.5% chance of exploitation in 30 days – higher than 74% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:X/RC:X

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Oct 2023

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 2026-10-26.

What to do

Affected software

ProductAffectedFixed in
Fortinet FortiAnalyzerAffected
  • =7.4.0
  • =7.2.0
  • =7.0.0
  • =6.4.0
  • =6.2.0
Fixed in–

AI-suggested

1. Monitor Fortinet’s official advisories closely and apply security patches or updates as soon as they are released for the affected FortiAnalyzer and FortiManager versions. 2. Restrict local access to FortiAnalyzer devices strictly to trusted administrators and use strong authentication mechanisms such as multi-factor authentication. 3. Implement network segmentation to limit access to management interfaces, reducing the risk of unauthorized local access. 4. Audit and monitor CLI command usage and logs for unusual or unauthorized commands that may indicate exploitation attempts. 5. Employ host-based intrusion detection systems (HIDS) on FortiAnalyzer devices if supported, to detect anomalous behavior. 6. Review and harden access control policies and administrative privileges to minimize the number of users with local access. 7. Consider temporary compensating controls such as disabling unused CLI commands or interfaces until patches are available. 8. Conduct security awareness training for administrators to recognize and report suspicious activity related to Fortinet devices.

Description

CVE-2023-42788 is a high-severity OS command injection vulnerability affecting multiple versions of Fortinet FortiAnalyzer and FortiManager. It allows a local attacker with low privileges to execute unauthorized commands by exploiting improper neutralization of special elements in CLI commands. The flaw exists in versions 6.2.0 through 7.4.0, impacting confidentiality, integrity, and availability of affected systems. No user interaction is required, but local access with low privileges is necessary. Although no known exploits are currently reported in the wild, the vulnerability’s potential impact is significant due to the critical role of FortiAnalyzer in network security monitoring and logging. European organizations using these Fortinet products are at risk, especially those in countries with high Fortinet market penetration and critical infrastructure reliance on these devices.

References

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