CVE-2024-55591: listed in the CISA KEV catalog

CVE-2024-55591 · CVSS 9.8 CRITICAL · EPSS 98% · KEV 2025-01-14

An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting FortiOS version 7.0.0 through 7.0.16 and FortiProxy version 7.0.0 through 7.0.19 and 7.2.0 through 7.2.12 allows a remote attacker to gain super-admin privileges via crafted requests to Node.js websocket module.

Is CVE-2024-55591 exploited?

• Listed in the CISA KEV catalog on 2025-01-14.
• Federal remediation due 2025-01-21.
• Past that date by 571 days.
• Used in ransomware campaigns.
• EPSS puts exploitation in the next 30 days at 98%.
• Public exploit code: none found in monitored sources.
• Public detection rules exist.

Which products and versions are affected?

No affected package list recorded here yet.

Is there a patch?

No patch identifier recorded here yet.

What PlainSec published about CVE-2024-55591

• Gunra Shifts Ransomware to Perimeter Break-ins (2026-08-13)
• Gunra RaaS Turns Edge Access Into Extortion (2026-08-11)

Primary sources

• NVD record
• CISA KEV catalog
• Nuclei template

What this record does not say

• No affected package data.
• No patch identifier.

KEV and EPSS are re-checked daily. Record last updated 2026-08-14.