CVE-2026-126230: Fortinet FortiAnalyzer format string vulnerability

CVE-2026-126230 · Severity: high · CVSS 7.2 · Published 2026-11-11

Fortinet FortiAnalyzer and FortiManager are centralized management and logging platforms for enterprise security appliances. A format string flaw allows authenticated administrators to execute arbitrary code or commands or crash the system through malicious requests. This could allow a rogue admin to take full control of the management infrastructure or disable logging and monitoring across all protected networks.

Technologies: Fortinet Fortianalyzer, Fortinet Fortianalyzer Cloud, Fortinet FortiManager, Fortinet FortiManager Cloud. Vendors: Fortinet.

Quick answers

Is CVE-2026-126230 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-126230 being exploited in the wild.
How severe is CVE-2026-126230?
High severity, with a CVSS score of 7.2, published 11 November 2026.
Which products and versions are affected?
Fortinet Fortianalyzer 8.0.0-8.0.1, 7.6.0-7.6.7, 7.4.0-7.4.11, 7.2.0-7.2.12; Fortinet Fortianalyzer Cloud 8.0.0-8.0.1, 7.6.0-7.6.7, 7.4.1-7.4.11, 7.2.1-7.2.12; Fortinet FortiManager 8.0.0-8.0.1, 7.6.0-7.6.7, 7.4.0-7.4.11, 7.2.0-7.2.12; Fortinet FortiManager Cloud 8.0.0-8.0.1, 7.6.0-7.6.7, 7.4.1-7.4.11, 7.2.1-7.2.12.
Is there a fix for CVE-2026-126230?
Yes: fixed in FortiAnalyzer 8.0.2, 7.6.8, 7.4.12, 7.2.13; FortiAnalyzer Cloud 8.0.2, 7.6.8, 7.4.12, 7.2.13; FortiManager 8.0.2, 7.6.8, 7.4.12, 7.2.13; FortiManager Cloud 8.0.2, 7.6.8, 7.4.12, 7.2.13. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-126230 attacked?
It is attacked over the network.
Am I affected by CVE-2026-126230?
Check whether you run Fortinet Fortianalyzer, Fortinet Fortianalyzer Cloud, Fortinet FortiManager or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: FortiAnalyzer 8.0.2, 7.6.8, 7.4.12, 7.2.13; FortiAnalyzer Cloud 8.0.2, 7.6.8, 7.4.12, 7.2.13; FortiManager 8.0.2, 7.6.8, 7.4.12, 7.2.13; FortiManager Cloud 8.0.2, 7.6.8, 7.4.12, 7.2.13

Technical details

A format string vulnerability (CWE-134) in the API component allows an authenticated administrator to inject format string specifiers in requests, leading to information disclosure, memory corruption, or code execution. The vulnerability requires administrator-level authentication and a specially crafted request, but carries a CVSS score of 7.2 due to the potential for unauthorized code execution.

Affected products

  • Fortinet FortiAnalyzer 8.0.0-8.0.1, 7.6.0-7.6.7, 7.4.0-7.4.11, 7.2.0-7.2.12
  • Fortinet FortiAnalyzer Cloud 8.0.0-8.0.1, 7.6.0-7.6.7, 7.4.1-7.4.11, 7.2.1-7.2.12
  • Fortinet FortiManager 8.0.0-8.0.1, 7.6.0-7.6.7, 7.4.0-7.4.11, 7.2.0-7.2.12
  • Fortinet FortiManager Cloud 8.0.0-8.0.1, 7.6.0-7.6.7, 7.4.1-7.4.11, 7.2.1-7.2.12

Timeline

  • 2026-11-10: disclosed: Advisory published by Fortinet PSIRT

References

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