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CVE-2024-55591 CISA KEV · Actively exploitedLinked to ransomwareSuited to automated attack · CISA

Vulnerability in Fortinet FortiOS

CVSS score

9.6

EPSS probability

%94.1

Risk score

18.1

Published

1 y ago

Related Security News

Articles and analysis bulletins in which the press and security publications have covered this vulnerability:

The Cyber Express11.08.2026

Gunra Ransomware Builds a New Attack Network Through RaaS

Gunra ransomware has expanded its operations through a structured ransomware-as-a-service (RaaS) affiliate program, prompting the FBI, CISA and other agencies to issue a joint advisory warning organizations about the threat. The Gunra ransomware variant uses a double-extortion model, encrypting victim data while threatening to publish stolen information on a dedicated leak site if ransom demands are not met. The FBI first observed Gunra in April 2025 as a double-extortion ransomware variant derived from leaked Conti ransomware source code. Gunra Ransomware Shifts to Affiliate Model By early 20

Security.NL11.08.2026

VS waarschuwt voor ransomware-aanvallen via kwetsbare Fortinet-firewalls

Criminelen maken gebruik van kwetsbaarheden in Fortinet FortiGate-firewalls voor het infecteren van organisaties met ...

Unit 4210.07.2026

No Manners Here: The Ruthless Rise of The Gentlemen Ransomware

Unit 42 explores The Gentlemen ransomware operations, revealing the affiliate model driving its rapid growth. Learn more here. The post No Manners Here: The Ruthless Rise of The Gentlemen Ransomware appeared first on Unit 42.

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Get this vulnerability through the API

Affected products, version ranges, exploitation status and patch information in a single request, with a free key.

curl -H "x-api-key: $DAYBREACH_API_KEY" \
  "https://api.daybreach.dev/api/v1/intel/cves/CVE-2024-55591"