CVE-2025-54571

Name: CVE-2025-54571
Creator: NVD / NIST
Published: 2025-08-06T00:15:30.687+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.9/10EPSS 0.26%

Last modified Jun 17, 2026

CVE-2025-54571 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11 and below, an attacker can override the HTTP response’s Content-Type, which could lead to several issues depending on the HTTP scenario. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

Description

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11 and below, an attacker can override the HTTP response’s Content-Type, which could lead to several issues depending on the HTTP scenario. For example, we have demonstrated the potential for XSS and arbitrary script source code disclosure in the latest version of mod_security2. This issue is fixed in version 2.9.12.

Metrics

CVSS 3.1

6.1/10

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

CVSS 4.0

6.9/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.26%

17.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Owasp	Modsecurity	>= 2.0.0, < 2.9.12

References

https://github.com/owasp-modsecurity/ModSecurity/commit/6d7e8eb18f2d7d368fb8e29516fcdeaeb8d349b8Patch
https://github.com/owasp-modsecurity/ModSecurity/issues/2514Exploit, Issue Tracking
https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-cg44-9m43-3f9vExploit, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/09/msg00008.html
https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-cg44-9m43-3f9vExploit, Vendor Advisory

Timeline

Published: Aug 6, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-54571?

How severe is CVE-2025-54571?

CVE-2025-54571 has a CVSS score of 6.9/10 (MEDIUM severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.

How do I fix CVE-2025-54571?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-54571?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST