Fortinet FortiOS and FortiProxy Authentication Bypass Vulnerability

Critical Threat Advisory: This vulnerability is documented in active Ransomware campaigns. Immediate remediation required.

Technical Severity

CVSS v3.1 Metrics

HIGH

8.1 / 10

Minimal Risk Critical

Vector Specification

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:X/RC:C

Exploitation Likelihood

EPSS Prediction

4.37 %

Predictive Probability

Percentile Rank

88.7 th

Documented as more likely to be exploited than 88.7% of known CVEs.

Detection Date

Mar 18, 2025

Remediation Due

Apr 08, 2025

CISA Catalog Active

Threat Analysis

Fortinet FortiOS and FortiProxy contain an authentication bypass vulnerability that allows a remote attacker to gain super-admin privileges via crafted CSF proxy requests.

Remediation Directive

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Asset Context

Vendor Identity

Fortinet

Affected Product

FortiOS and FortiProxy

Ransomware Status

Campaign Use Known

Weakness Classification

CWE-288

External Intelligence

https://fortiguard.fortinet.com/psirt/FG-IR-24-535

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2025-24472