Is CVE-2011-3348 in the CISA KEV catalog?

No. CVE-2011-3348 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-3348?

CVE-2011-3348 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2011-3348?

CVE-2011-3348 has an EPSS score of 22.38% (97th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2011-3348?

Upgrade apache2 on debian 11 to 2.2.21-1 or later.

CVE & CISA-KEV Catalog

CVE-2011-3348

MEDIUMEPSS 97th pctl

4.3

CVSS v2

NVD

Description

The mod_proxy_ajp module in the Apache HTTP Server before 2.2.21, when used with mod_proxy_balancer in certain configurations, allows remote attackers to cause a denial of service (temporary "error state" in the backend server) via a malformed HTTP request.

CWE-400Resource Exhaustion

How to fix

Remediation Available

apache2Debian

Fixed in:2.2.21-1CVE-2011-3348

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 v2 Vector

No CVSS vector data available.

Exploit Intelligence

22.38%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-44487	High	7.5	100%	KEV	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2011-3192	High	7.8	99%	-	Fix
CVE-2019-11478	Medium	5.3	95%	-	Fix
CVE-2024-25617	Medium	5.3	89%	-	Fix
CVE-2018-1000115	High	7.5	88%	-	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 2026-04-29.