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CVE

CVE-2026-24858

First Reported
Apr 2, 2026
Latest Reported
Apr 2, 2026
Articles
1
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IOC
0
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CVE Enrichment

CVSS
9.8 CRITICAL
EPSS
85.80%
EPSS Percentile
99.73%
CISA KEV
YES — Known Exploited Vulnerability

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, 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.

Technical Details

CVSS Version
3.1
CNA / NVD Source
psirt@fortinet.com
Published
28-Jan-2026 03:16
Last Modified
17-Jun-2026 17:23
EPSS Date
2026-10-12
CWE
CWE-288

CVSS Vector

CVSS:3.1 AV:N / AC:L / PR:N / UI:N / S:U / C:H / I:H / A:H

CISA KEV Details

Date Added
2026-01-27
Remediation Due
2026-01-30
Known Ransomware Campaign Use
Unknown
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.
Notes
Please adhere to Fortinet's guidelines to assess exposure and mitigate risks. Check for signs of potential compromise on all internet accessible Fortinet products affected by this vulnerability. Apply any final mitigations provided by the vendor as soon as they become available. For more information please see: https://fortiguard.fortinet.com/psirt/FG-IR-26-060 ; https://www.fortinet.com/blog/psirt-blogs/analysis-of-sso-abuse-on-fortios ; https://nvd.nist.gov/vuln/detail/CVE-2026-24858

Affected Products / Versions

References

Last enrichment sync: 12-Oct-2026 22:48
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (1)

CVE (4)

CVE-2026-12811 related articleCVE-2026-13401 related articleCVE-2026-201311 related articleCVE-2026-30551 related article

People (1)

Jerry Gamblin1 related article

Vendors (5)

Amazon Web Services1 related articleCisco1 related articleCitrix1 related articleFortinet1 related articleIvanti1 related article

Products (10)

Cisco Firewall Management Center1 related articleFortiAnalyzer1 related articleFortiGate1 related articleFortiManager1 related articleFortiOS1 related articleFortiProxy1 related articleFortiSwitchManager1 related articleFortiWeb1 related articleIvanti Connect Secure1 related articleIvanti Endpoint Manager Mobile (EPMM)1 related article

Tools (1)

MadPot1 related article

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.