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CVE-2026-24858

Fortinet — Fortinet Multiple Products Authentication Bypass Using an Alternate Path or Channel Vulnerability

Fortinet · CWE-288 · in CISA KEV since 2026-01-27

CISA federal deadline · Overdue by 9 monthsCISA KEVActively Exploited
86

EVRS 86 of 100 Immediate

Patch Immediately

Rank 356 of 2,960 tracked

Download PDF

Why it scores 86

Evidence available: 6 of 7 signals

Listed in the CISA KEV catalog, and an EPSS probability of 0.858.

  • CISA KEVApplied
  • RansomwareDid not apply
  • Vendor exploitationDid not apply
  • EPSSApplied
  • Microsoft Exploitability IndexNot applicable
  • Pre-patch disclosureNo data
  • KEV recencyDid not apply
  • CVSSApplied

The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data

Fix

Patch or fixed version identified

CISA required action

Fixed in

fortianalyzer: update to a version newer than 7.0.15 | fortianalyzer: update to a version newer than 7.2.11 | fortianalyzer: update to 7.4.10 or later | fortianalyzer: update to 7.6.6 or later | fortimanager: update to a version newer than 7.0.15 | fortimanager: update to a version newer than 7.2.11

Affected versions

  • fortianalyzer>= 7.0.0 <= 7.0.15>= 7.2.0 <= 7.2.11>= 7.4.0 < 7.4.10>= 7.6.0 < 7.6.6
  • fortimanager>= 7.0.0 <= 7.0.15>= 7.2.0 <= 7.2.11>= 7.4.0 < 7.4.10>= 7.6.0 < 7.6.6
  • fortinac-f>= 7.6.3 < 7.6.6
  • fortiproxy>= 7.0.0 <= 7.0.22>= 7.2.0 <= 7.2.15>= 7.4.0 <= 7.4.12>= 7.6.0 <= 7.6.4
  • fortiweb>= 7.4.0 <= 7.4.11>= 7.6.0 <= 7.6.6>= 8.0.0 <= 8.0.3
  • fortios>= 7.0.0 <= 7.0.18>= 7.2.0 <= 7.2.12>= 7.4.0 < 7.4.11>= 7.6.0 < 7.6.6
  • ruggedcom ape1808 firmware
  • ruggedcom ape1808

Remediation

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

Fixed versions from NVD.

Evidence

Each value with its source
MeasureValueSource
CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. 9.8 NVD
FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. 0.858 (99.73rd pctl) FIRST EPSS
Actively exploitedWhether a source of record has confirmed attacks using it in the wild. Confirmed CISA KEV
Ransomware campaign useWhether CISA has seen ransomware operators use it. Unknown or none CISA KEV
CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. 2026-01-30 · CISA federal deadline · Overdue by 9 months CISA KEV
Public exploit moduleA module existing is not the same as active exploitation. None known Metasploit
EUVD cross-referenceENISA's record: CVSS 9.4 (v3.1), assigned by fortinet. Listed ENISA EUVD

Description

NVD

An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.5, FortiAnalyzer 7.4.0 through 7.4.9, FortiAnalyzer 7.2.0 through 7.2.11, FortiAnalyzer 7.0.0 through 7.0.15, FortiManager 7.6.0 through 7.6.5, FortiManager 7.4.0 through 7.4.9, FortiManager 7.2.0 through 7.2.11, FortiManager 7.0.0 through 7.0.15, FortiNAC-F 7.6.3 through 7.6.5, FortiOS 7.6.0 through 7.6.5, FortiOS 7.4.0 through 7.4.10, FortiOS 7.2.0 through 7.2.12, FortiOS 7.0.0 through 7.0.18, FortiProxy 7.6.0 through 7.6.4, FortiProxy 7.4.0 through 7.4.12, FortiProxy 7.2.0 through 7.2.15, FortiProxy 7.0.0 through 7.0.22, FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWeb 7.4.0 through 7.4.11 may allow an attacker with a FortiCloud account and a registered device to log into other devices registered to other accounts, if FortiCloud SSO authentication is enabled on those devices.

What CISA says to do