All vulnerabilities

Servers and applications

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.

Severity
High 7.8
Published
29 Aug 2011
Last changed
16 Jun 2026
Added to UpHeron
17 Oct 2026
Fixed in
2.0.65, 2.2.20
Exploit chance
99% in the next 30 daysHigher than 99% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Uncontrolled resource consumption (CWE-400)
Attack
Over the network · No login needed
Attacker can
Take it down
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:C
Sources
NVD

Affected software

SoftwareAffected versions
Apache HTTP ServerServers and applications · cpe:a:apache:http_server
  • From 2.0.35 before 2.0.65
  • From 2.2.0 before 2.2.20

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-3192
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-3192