CVE-2011-3192

CVE-2011-3192 is a high-severity vulnerability in Apache Http Server with a CVSS 2.0 base score of 7.8. Its EPSS exploit-prediction score of 99% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-400.

Key facts

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.

Frequently asked questions

What is CVE-2011-3192?
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 severe is CVE-2011-3192?
CVE-2011-3192 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2011-3192 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 99% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3192?
CVE-2011-3192 primarily affects Apache Http Server. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-3192?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2011-3192 published?
CVE-2011-3192 was published on 2011-08-29 and last updated on 2026-06-16.

References

Affected products (15)

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Threat intelligence

Threat-intel indicators referencing this CVE: