Is CVE-2025-48866 in the CISA KEV catalog?

No. CVE-2025-48866 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-48866?

CVE-2025-48866 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2025-48866?

CVE-2025-48866 has an EPSS score of 0.80% (52th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-48866?

Upgrade modsecurity-apache on debian 11 to 2.9.3-3+deb11u4 or later. Fixes are available for 14 affected products.

CVE & CISA-KEV Catalog

CVE-2025-48866

HIGH

7.5

CVSS v3

NVD

Description

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Versions prior to 2.9.10 contain a denial of service vulnerability similar to GHSA-859r-vvv8-rm8r/CVE-2025-47947. The `sanitiseArg` (and `sanitizeArg` - this is the same action but an alias) is vulnerable to adding an excessive number of arguments, thereby leading to denial of service. Version 2.9.10 fixes the issue. As a workaround, avoid using rules that contain the `sanitiseArg` (or `sanitizeArg`) action.

CWE-1050

How to fix

Remediation Available

modsecurity-apacheDebian

Fixed in:2.9.3-3+deb11u4CVE-2025-48866

Fixed in:2.9.7-1+deb12u1CVE-2025-48866

Fixed in:2.9.10-1CVE-2025-48866

mod_securityRed Hat / RHEL

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

mod_securityRocky

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

mod_security-debuginfoRocky

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

mod_security-debuginfoRed Hat / RHEL

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

mod_security-debugsourceRed Hat / RHEL

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

mod_security-debugsourceRocky

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

mod_security-mlogcRed Hat / RHEL

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

mod_security-mlogcRocky

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

mod_security-mlogc-debuginfoRed Hat / RHEL

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

mod_security-mlogc-debuginfoRocky

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-1.el9_2.2RHSA-2025:13775

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

Fixed in:0:2.9.6-1.el9_4.2RHSA-2025:13670

Fixed in:0:2.9.6-2.el9_6.1RHSA-2025:12838

Fixed in:0:2.9.3-12.el9_0.2RHSA-2025:13716

libapache2-mod-security2Ubuntu

Fixed in:2.7.7-2ubuntu0.1~esm2USN-7567-1

Fixed in:2.9.0-1ubuntu0.1~esm2USN-7567-1

Fixed in:2.9.2-1ubuntu0.1~esm2USN-7567-1

Fixed in:2.9.3-1ubuntu0.1+esm1USN-7567-1

Fixed in:2.9.5-1ubuntu0.1~esm2USN-7567-1

Fixed in:2.9.7-1ubuntu0.24.04.1~esm1USN-7567-1

libapache2-modsecurityUbuntu

Fixed in:2.7.7-2ubuntu0.1~esm2USN-7567-1

Fixed in:2.9.0-1ubuntu0.1~esm2USN-7567-1

modsecurity-apacheUbuntu

Fixed in:2.7.7-2ubuntu0.1~esm2USN-7567-1

Fixed in:2.9.0-1ubuntu0.1~esm2USN-7567-1

Fixed in:2.9.2-1ubuntu0.1~esm2USN-7567-1

Fixed in:2.9.3-1ubuntu0.1+esm1USN-7567-1

Fixed in:2.9.5-1ubuntu0.1~esm2USN-7567-1

Fixed in:2.9.7-1ubuntu0.24.04.1~esm1USN-7567-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.80%probability of exploitation in 30 days

52ndpercentile

Moderate risk: more likely to be exploited than 52% of all known CVEs.

References

Patch1

github.com

Exploit1

github.com

Mailing List1

lists.debian.org

Product1

github.com

Other references1

github.com

Related Vulnerabilities

Other CWE-1050 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-1390	High	7.5	5.1%	-	Fix
CVE-2019-11254	Medium	6.5	2.4%	-	Fix
CVE-2024-4068	High	7.5	1.5%	-	Fix
CVE-2021-41039	High	7.5	1.3%	-	Fix
CVE-2026-48779	High	7.5	0.8%	-	Fix
CVE-2025-32907	Medium	5.3	0.7%	-	Fix

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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 2025-07-02.