UpHeron
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Servers and applications

CVE-2011-0534

Apache Tomcat 7.0.0 through 7.0.6 and 6.0.0 through 6.0.30 does not enforce the maxHttpHeaderSize limit for requests involving the NIO HTTP connector, which allows remote attackers to cause a denial of service (OutOfMemoryError) via a crafted request.

Severity
Medium 5.0
Published
10 Feb 2011
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
7.9% in the next 30 daysHigher than 94% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-399
Attack
Over the network · No login needed
Attacker can
Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
Apache TomcatServers and applications · cpe:a:apache:tomcat
  • Version 7.0.6
  • Version 7.0.5
  • Version 7.0.4
  • Version 7.0.3
All 34 release lines
  • Version 6.0.0
  • Version 6.0.1
  • Version 6.0.2
  • Version 6.0.3
  • Version 6.0.4
  • Version 6.0.5
  • Version 6.0.6
  • Version 6.0.7
  • Version 6.0.8
  • Version 6.0.9
  • Version 6.0.10
  • Version 6.0.11
  • Version 6.0.12
  • Version 6.0.13
  • Version 6.0.14
  • Version 6.0.15
  • Version 6.0.16
  • Version 6.0.17
  • Version 6.0.18
  • Version 6.0.19
  • Version 6.0.20
  • Version 6.0.24
  • Version 6.0.26
  • Version 6.0.27
  • Version 6.0.28
  • Version 6.0.29
  • Version 6.0.30
  • Version 7.0.0
  • Version 7.0.1
  • Version 7.0.2
  • Version 7.0.3
  • Version 7.0.4
  • Version 7.0.5
  • Version 7.0.6

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-0534
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-0534