CVE & CISA-KEV Catalog

CVE-2011-3192

HIGHEPSS 100th pctl
7.8
CVSS v2
NVD

Description

The byterange filter in the Apache HTTP Server 1.3.x, 2.0.x through 2.0.64, and 2.2.x through 2.2.19 allows remote attackers to cause a denial of service (memory and CPU consumption) via a Range header that expresses multiple overlapping ranges, as exploited in the wild in August 2011, a different vulnerability than CVE-2007-0086.

How to fix

Remediation Available
apache2Debian
Fixed in:2.2.19-2CVE-2011-3192
Fixed in:2.2.19-2CVE-2011-3192
Fixed in:2.2.19-2CVE-2011-3192
Fixed in:2.2.19-2CVE-2011-3192
httpdWindows application
Affected:2.0.35 2.0.65Fixed in:2.0.65Apache Lounge
Affected:2.2.0 2.2.20Fixed in:2.2.20Apache Lounge

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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

98.95%probability of exploitation in 30 days
100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

References

Related Vulnerabilities

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

CVESeverityCVSSEPSSExploitedFix
CVE-2023-44487High7.5100%KEVFix
CVE-2021-44228Critical10.0100%KEV + RansomFix
CVE-2019-11478Medium5.395%-Fix
CVE-2023-21547High7.589%-Fix
CVE-2024-25617Medium5.389%-Fix
CVE-2018-1000115High7.588%-Fix

Common questions

How do I fix CVE-2011-3192?

Published advisories record a fix for 2 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2011-3192 being actively exploited?

Not that we know of. CVE-2011-3192 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 98.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 100% of all scored CVEs.

How severe is CVE-2011-3192?

CVE-2011-3192 has a CVSS v2 base score of 7.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2011-3192 affect?

Published advisories record a fix for apache2 (Debian), httpd (Windows application). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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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.