CVE-2025-55018

CVSS 5.2 MEDIUMEPSS 0.4%CWE-444

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.2EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

10 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

An inconsistent interpretation of http requests ('http request smuggling') vulnerability in Fortinet FortiOS 7.6.0, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4.3 through 6.4.16 may allow an unauthenticated attacker to smuggle an unlogged http request through the firewall policies via a specially crafted header

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N/E:P/RL:O/RC:C

Affected products

Fortinet · FortiOS

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References

https://cert-portal.siemens.com/productcert/html/ssa-975644.html https://fortiguard.fortinet.com/psirt/FG-IR-25-667