CVE-2025-55018

🔶 medium

Summary

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 Score

5.8

Medium

EPSS Score

0.1

Exploit Probability

Published Date

2026-02-10

First Seen: 2026-02-11

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 32.9% of all 326,604 vulnerabilities in our database.

#219,047

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Feb 11, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

YES

Can be exploited automatically

💥 Technical Impact

Partial

Limited system impact

SSVC data provided by CISA

Last Modified 2026-02-23

Source NVD 🔗

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

CWE IDs (Weakness Types)

CWE-444

📦 Affected Products 3

Vendor	Product	Status	Affected Versions
fortinet	fortios	Affected	> 6.4.3 < 6.4.16
fortinet	fortios	Affected	> 7.0.0 < 7.4.10
fortinet	fortios	Affected	v7.6.0

🔗 References 1

https://fortiguard.fortinet.com/psirt/FG-IR-25-667

Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2025-53844	⚠️ high	8.8	0.0	A out-of-bounds write vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 ...	2026-05-12
CVE-2025-53847	🔶 medium	6.5	0.0	A missing authentication for critical function vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 thro...	2026-04-14
CVE-2025-64157	🔶 medium	6.7	0.0	A use of externally-controlled format string vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4.0 throug...	2026-02-10
CVE-2025-68686	🔶 medium	5.9	0.0	An Exposure of Sensitive Information to an Unauthorized Actor vulnerability [CWE-200] vulnerability in Fortinet FortiOS ...	2026-02-10
CVE-2026-22153	⚠️ high	8.1	0.1	An Authentication Bypass by Primary Weakness vulnerability [CWE-305] vulnerability in Fortinet FortiOS 7.6.0 through 7.6...	2026-02-10
CVE-2026-24858	⛔ critical	9.8	4.8	An Authentication Bypass Using an Alternate Path or Channel vulnerability [CWE-288] vulnerability in Fortinet FortiAnaly...	2026-01-27

These CVEs affect the same products