CVE-2026-22153 Auth bypass in FortiOS

What is CVE-2026-22153?

CVE-2026-22153 is a high-severity authentication bypass vulnerability in Fortinet Fortios, published on 10 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An Authentication Bypass by Primary Weakness vulnerability [CWE-305] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4 may allow an unauthenticated attacker to bypass LDAP authentication of Agentless VPN or FSSO policy, when the remote LDAP server is configured in a specific way.

Weakness: CWE-305

Which versions are affected by CVE-2026-22153?

It affects 1 product.

Products include Fortinet Fortios.

How do I fix CVE-2026-22153?

No fix has been published for CVE-2026-22153 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-22153 being exploited?

There is no known exploitation of CVE-2026-22153 in the wild and no public exploit code.

Other vulnerabilities in Fortinet Fortios

• CVE-2024-23113 Fortinet Multiple Products Format String Exploited Critical 9.8
• CVE-2022-40684 Fortinet Multiple Products Authentication Bypass Exploited Critical 9.8
• CVE-2024-55591 Fortinet FortiOS and FortiProxy Authentication Bypass Exploited Critical 9.6
• CVE-2024-21762 Fortinet FortiOS Out-of-Bound Write Exploited Critical 9.6
• CVE-2022-42475 Fortinet FortiOS Heap-Based Buffer Overflow Exploited Critical 9.3

All Fortinet Fortios vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-p2r3-58qh-phf8.