CVE-2025-24472
Fortinet FortiOS and FortiProxy Authentication Bypass Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 8 April 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] affecting FortiOS 7.0.0 through 7.0.16 and FortiProxy 7.2.0 through 7.2.12, 7.0.0 through 7.0.19 may allow a remote unauthenticated attacker with prior knowledge of upstream and downstream devices serial numbers to gain super-admin privileges on the downstream device, if the Security Fabric is enabled, via crafted CSF proxy requests.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 7.11% probability · 94th percentile
- CISA KEV
- Listed 18 March 2025 · due 8 April 2025 · used in ransomware campaigns
- Weakness
- CWE-288
- Affected
- fortinet/fortiproxy · fortinet/fortios
- Source
- psirt@fortinet.com
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://fortiguard.fortinet.com/psirt/FG-IR-24-535 ; https://nvd.nist.gov/vuln/detail/CVE-2025-24472
References
- https://fortiguard.fortinet.com/psirt/FG-IR-24-535Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24472US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.