Is CVE-2025-54571 in the CISA KEV catalog?

No. CVE-2025-54571 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-54571?

CVE-2025-54571 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2025-54571?

CVE-2025-54571 has an EPSS score of 0.26% (18th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-54571?

Upgrade modsecurity-apache on debian 11 to 2.9.3-3+deb11u5 or later.

CVE & CISA-KEV Catalog

CVE-2025-54571

MEDIUM

6.1

CVSS v3

NVD

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.

CWE-252 CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

modsecurity-apacheDebian

Fixed in:2.9.3-3+deb11u5CVE-2025-54571

Fixed in:2.9.7-1+deb12u2CVE-2025-54571

Fixed in:2.9.11-1+deb13u1CVE-2025-54571

Fixed in:2.9.12-2CVE-2025-54571

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.26%probability of exploitation in 30 days

18thpercentile

Low risk: more likely to be exploited than 18% of all known CVEs.

References

Patch1

github.com

Exploit2

Other references1

lists.debian.org

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-03.