CVE-2026-24858

Published Jan 27, 2026

Last updated 11 days ago

Overview

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 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.
Source
psirt@fortinet.com
NVD status
Analyzed
Products
fortianalyzer, fortimanager, fortiproxy, fortiweb, fortios

Risk scores

CVSS 3.1

Type
Secondary
Base score
9.8
Impact score
5.9
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity
CRITICAL

Known exploits

Data from CISA

Vulnerability name
Fortinet Multiple Products Authentication Bypass Using an Alternate Path or Channel Vulnerability
Exploit added on
Jan 27, 2026
Exploit action due
Jan 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.

Weaknesses

psirt@fortinet.com
CWE-288

Social media

Hype score
Not currently trending
  1. FortiOS 7.4.11が来てるので対応 ちなみに、ひとつ前の7.4.10のスコアは以下の通り FortiOS 7.4.10 CVE-2026-24858 Max CVSS 9.8 EPSS Score 3.71% CVE-2025-54821 Max CVSS 6.0 EPSS Score 0.02% CVE-2025-31514 Max CVSS 4.3 EPSS Score 0.04%

    @g_yotuya

    3 Feb 2026

    316 Impressions

    0 Retweets

    2 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  2. Top 5 Trending CVEs: 1 - CVE-2025-43529 2 - CVE-2026-1281 3 - CVE-2026-24858 4 - CVE-2024-12084 5 - CVE-2026-24061 #cve #cvetrends #cveshield #cybersecurity https://t.co/4Fua3CAN6W

    @CVEShield

    1 Feb 2026

    187 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  3. 🚨 FortiOS [—] Jan 30, 2026 Comprehensive security advisory on recent, actively exploited authentication bypass vulnerabilities (CVE-2026-24858, CVE-2025-59718) endangering FortiOS and related products despite recent patches. Checkout our Threat Intelligence Platform:... http

    @transilienceai

    30 Jan 2026

    60 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

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  4. 🚨 CRITICAL THREAT ALERT CVE-2026-24858: Fortinet SSO bypass - PATCH NOW! CVE-2025-55182: React RCE - Active exploitation 100+ new malicious URLs Emotet/QakBot C2s active #ThreatIntel #CyberSecurity

    @404LABSx

    29 Jan 2026

    65 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  5. Top 5 Trending CVEs: 1 - CVE-2025-43529 2 - CVE-2026-24858 3 - CVE-2025-8088 4 - CVE-2025-15467 5 - CVE-2025-23049 #cve #cvetrends #cveshield #cybersecurity https://t.co/4Fua3CAN6W

    @CVEShield

    29 Jan 2026

    137 Impressions

    0 Retweets

    1 Like

    0 Bookmarks

    0 Replies

    0 Quotes

  6. Google alerte sur l'exploitation active d'une vulnérabilité critique WinRAR (CVE-2026-24858) par des acteurs étatiques. Patch urgent nécessaire. #Cybersecurity #ZeroDay https://t.co/rES71xLzOy https://t.co/rES71xLzOy

    @cyberwatcher_

    28 Jan 2026

    43 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  7. 【独自】フォーティネットがFortiOS等多数の製品における重大(Critical)な認証回避のゼロデイ脆弱性CVE-2026-24858を修正。FortiCloud SSO経由での認証回避の脆弱性CVE-2025-59718へのパッチを当てても被害が続いていた関

    @__kokumoto

    27 Jan 2026

    3463 Impressions

    9 Retweets

    14 Likes

    11 Bookmarks

    2 Replies

    1 Quote

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