CVE-2026-24858

CRITICAL CISA KEV

CVSS v3

9.8

CRITICAL

EPSS Score

6.2%

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

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, 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

CISA Known Exploited Vulnerability

Date Added: 1/27/2026
Patch Due Date: 1/30/2026
Required Action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Technical Details

CVSS v3 Vector: 3.1
Published: 1/27/2026
Last Modified: 1/29/2026

Frequently Asked Questions

What is CVE-2026-24858?

Is CVE-2026-24858 actively exploited?

Yes. CVE-2026-24858 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 1/30/2026.

What is the CVSS score for CVE-2026-24858?

CVE-2026-24858 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 3.1.

Is CVE-2026-24858 affecting your environment?

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