CVE-2024-55591An 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…
Updated under an hour ago ()
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It affects Fortinet FortiOS and 1 other product. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Jan 14, 2025; federal agencies had to remediate by Jan 21, 2025, and it is known to be used in ransomware. Treat that date as your deadline.
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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.
- CVSS
- 9.6 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C
- Weakness (CWE)
- CWE-288
- Known exploited
- Added to CISA KEV Jan 14, 2025; federal remediation due Jan 21, 2025; known ransomware useApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 94.15% (percentile 100)
- Assigned by
- fortinet
- NVD analysis
- Analyzed
- Record last updated
- Aug 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Fortinet FortiOS fortinet:fortios | from 7.0.0 through 7.0.16 | CNA record |
Fortinet FortiProxy fortinet:fortiproxy | from 7.2.0 through 7.2.12; from 7.0.0 through 7.0.19 | CNA record |
fortinet fortiproxy fortinet:fortiproxy | from 7.0.0 before 7.0.20; from 7.2.0 before 7.2.13 | NVD |
fortinet fortios fortinet:fortios | from 7.0.0 before 7.0.17 | NVD |
References
- https://fortiguard.fortinet.com/psirt/FG-IR-24-535mitigation, vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-55591us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.