CVE-2025-67604: DoS due to unsafe function in signal handler

Published May 12, 2026
·
Updated

A use of potentially Dangerous Function vulnerability [CWE-676] in FortiAnalyzer and FortiManager API may allow an authenticated attacker to cause a system hang via multiple specially crafted HTTP requests causing crashes. This happens if internal locks are aligned, which is out of control of the attacker.

Other sources

A use of potentially dangerous function vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.4, FortiAnalyzer 7.4.0 through 7.4.8, FortiAnalyzer 7.2 all versions, FortiAnalyzer 7.0 all versions, FortiAnalyzer 6.4 all versions, FortiManager 7.6.0 through 7.6.4, FortiManager 7.4.0 through 7.4.8, FortiManager 7.2 all versions, FortiManager 7.0 all versions, FortiManager 6.4 all versions may allow an authenticated attacker to cause a system hang via multiple specially crafted HTTP requests causing crashes. This happens if internal locks are aligned, which is out of control of the attacker.

— MITRE

Affected Software

16 affected componentsFixes available
Fortinet FortiAnalyzer>=7.2.0<=7.2.12
Fortinet FortiAnalyzer>=7.4.0<7.4.9
Fortinet FortiAnalyzer>=7.6.0<7.6.5
Fortinet FortiManager>=7.2.0<=7.2.12
Fortinet FortiManager>=7.4.0<7.4.9
Fortinet FortiManager>=7.6.0<7.6.5
Fortinet FortiAnalyzer>=7.6.0<=7.6.4
Fortinet FortiAnalyzer>=7.4.0<=7.4.8
Fortinet FortiAnalyzer>=7.2
Fortinet FortiAnalyzer>=7.0
Fortinet FortiAnalyzer>=6.4
Fortinet FortiManager>=7.6.0<=7.6.4
Fortinet FortiManager>=7.4.0<=7.4.8
Fortinet FortiManager>=7.2
Fortinet FortiManager>=7.0
Fortinet FortiManager>=6.4

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade FortiAnalyzer to a version that resolves this vulnerability.

    Fixed in 7.4.9
  2. Upgrade

    Upgrade FortiAnalyzer to a version that resolves this vulnerability.

    Fixed in 7.6.5
  3. Upgrade

    Upgrade FortiAnalyzer to a version that resolves this vulnerability.

    Fixed in 8.0.0
  4. Upgrade

    Upgrade FortiManager to a version that resolves this vulnerability.

    Fixed in 7.4.9
  5. Upgrade

    Upgrade FortiManager to a version that resolves this vulnerability.

    Fixed in 7.6.5
  6. Upgrade

    Upgrade FortiManager to a version that resolves this vulnerability.

    Fixed in 8.0.0
  7. Upgrade

    Upgrade FortiSandbox to a version that resolves this vulnerability.

    Fixed in 5.0.6
  8. Upgrade

    Upgrade FortiSandbox to a version that resolves this vulnerability.

    Fixed in 5.2.0
  9. Upgrade

    Upgrade FortiWeb to a version that resolves this vulnerability.

    Fixed in 7.6.7
  10. Upgrade

    Upgrade FortiWeb to a version that resolves this vulnerability.

    Fixed in 8.0.3
  11. Upgrade

    Upgrade FortiVoice to a version that resolves this vulnerability.

    Fixed in 7.4.2
  12. Upgrade

    Upgrade FortiVoice to a version that resolves this vulnerability.

    Fixed in 8.0.0

Event History

May 12, 2026
Advisory Published
via FortiGuard·12:00 AM
Data Sourced
via FortiGuard·12:00 AM
DescriptionSeverityWeaknessAffected Software
CVE Published
via MITRE·04:54 PM
Data Sourced
via MITRE·04:54 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·06:16 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2025-67604?

CVE-2025-67604 is categorized as a denial of service vulnerability.

2

How do I fix CVE-2025-67604?

To address CVE-2025-67604, update FortiAnalyzer and FortiManager to versions 7.6.5 or 7.4.9 or later.

3

What products are affected by CVE-2025-67604?

CVE-2025-67604 affects FortiAnalyzer and FortiManager versions prior to 7.6.5 and 7.4.9 respectively.

4

What kind of attack can exploit CVE-2025-67604?

An authenticated attacker can exploit CVE-2025-67604 by sending multiple specially crafted HTTP requests, causing a system hang.

5

Is there a workaround for CVE-2025-67604?

There is no known workaround for CVE-2025-67604; the recommended action is to upgrade to the fixed versions.

Company

Resources

Contact

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