CVE-2026-126223: Buffer Overflow

Published Nov 11, 2026
·
Updated

A stack-based buffer overflow vulnerability in Fortinet FortiAnalyzer 8.0.0 through 8.0.1, FortiAnalyzer 7.6.0 through 7.6.7, FortiAnalyzer 7.4.0 through 7.4.11, FortiAnalyzer Cloud 8.0.0 through 8.0.1, FortiAnalyzer Cloud 7.6.0 through 7.6.7, FortiAnalyzer Cloud 7.4.1 through 7.4.11, FortiManager 8.0.0 through 8.0.1, FortiManager 7.6.0 through 7.6.7, FortiManager 7.4.0 through 7.4.11, FortiManager Cloud 8.0.0 through 8.0.1, FortiManager Cloud 7.6.0 through 7.6.7, FortiManager Cloud 7.4.1 through 7.4.11 may allow an authenticated administrator to execute unauthorized code or commands or cause a denial of service via specially crafted JSON-RPC requests.

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade FortiAnalyzer Cloud to a version that resolves this vulnerability.

    Fixed in 7.4.12
  2. Upgrade

    Upgrade FortiAnalyzer Cloud to a version that resolves this vulnerability.

    Fixed in 7.6.8
  3. Upgrade

    Upgrade FortiAnalyzer Cloud to a version that resolves this vulnerability.

    Fixed in 8.0.2
  4. Upgrade

    Upgrade FortiAnalyzer to a version that resolves this vulnerability.

    Fixed in 7.4.12
  5. Upgrade

    Upgrade FortiAnalyzer to a version that resolves this vulnerability.

    Fixed in 7.6.8
  6. Upgrade

    Upgrade FortiAnalyzer to a version that resolves this vulnerability.

    Fixed in 8.0.2
  7. Upgrade

    Upgrade FortiManager Cloud to a version that resolves this vulnerability.

    Fixed in 7.4.12
  8. Upgrade

    Upgrade FortiManager Cloud to a version that resolves this vulnerability.

    Fixed in 7.6.8
  9. Upgrade

    Upgrade FortiManager Cloud to a version that resolves this vulnerability.

    Fixed in 8.0.2
  10. Upgrade

    Upgrade FortiManager to a version that resolves this vulnerability.

    Fixed in 7.4.12
  11. Upgrade

    Upgrade FortiManager to a version that resolves this vulnerability.

    Fixed in 7.6.8
  12. Upgrade

    Upgrade FortiManager to a version that resolves this vulnerability.

    Fixed in 8.0.2

Event History

Nov 11, 2026
CVE Published
via MITRE·09:30 PM
Data Sourced
via MITRE·09:30 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·10:17 PM
DescriptionSeverityWeakness

Frequently Asked Questions

1

Who can exploit this vulnerability?

Exploitation requires an authenticated administrator account. An attacker must be able to send specially crafted JSON-RPC requests to an affected FortiAnalyzer, FortiAnalyzer Cloud, FortiManager, or FortiManager Cloud instance.

2

Which deployments and releases are affected?

Affected releases include FortiAnalyzer and FortiManager 8.0.0 through 8.0.1, 7.6.0 through 7.6.7, and 7.4.0 through 7.4.11. FortiAnalyzer Cloud and FortiManager Cloud are affected in 8.0.0 through 8.0.1, 7.6.0 through 7.6.7, and 7.4.1 through 7.4.11.

3

What could an attacker achieve?

A successful exploit may allow an authenticated administrator to execute unauthorized code or commands, or cause a denial of service. The reported impact includes high confidentiality, integrity, and availability effects.

Company

Resources

Contact

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