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Vulnerability details: VCID-vd1s-m27a-8ucc
Vulnerability ID VCID-vd1s-m27a-8ucc
Aliases CVE-2012-2733
Summary java/org/apache/coyote/http11/InternalNioInputBuffer.java in the HTTP NIO connector in Apache Tomcat 6.x before 6.0.36 and 7.x before 7.0.28 does not properly restrict the request-header size, which allows remote attackers to cause a denial of service (memory consumption) via a large amount of header data.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-20 Improper Input Validation
System Score Found at
epss 0.20282 https://api.first.org/data/v1/epss?cve=CVE-2012-2733
epss 0.20282 https://api.first.org/data/v1/epss?cve=CVE-2012-2733
epss 0.20282 https://api.first.org/data/v1/epss?cve=CVE-2012-2733
epss 0.20282 https://api.first.org/data/v1/epss?cve=CVE-2012-2733
epss 0.20282 https://api.first.org/data/v1/epss?cve=CVE-2012-2733
epss 0.20282 https://api.first.org/data/v1/epss?cve=CVE-2012-2733
epss 0.20282 https://api.first.org/data/v1/epss?cve=CVE-2012-2733
epss 0.20282 https://api.first.org/data/v1/epss?cve=CVE-2012-2733
epss 0.20282 https://api.first.org/data/v1/epss?cve=CVE-2012-2733
epss 0.20282 https://api.first.org/data/v1/epss?cve=CVE-2012-2733
epss 0.20282 https://api.first.org/data/v1/epss?cve=CVE-2012-2733
epss 0.20282 https://api.first.org/data/v1/epss?cve=CVE-2012-2733
epss 0.20282 https://api.first.org/data/v1/epss?cve=CVE-2012-2733
apache_tomcat Important https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2733
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2012-2733
Reference id Reference type URL
http://lists.opensuse.org/opensuse-updates/2012-12/msg00089.html
http://lists.opensuse.org/opensuse-updates/2012-12/msg00090.html
http://lists.opensuse.org/opensuse-updates/2013-01/msg00037.html
http://marc.info/?l=bugtraq&m=136612293908376&w=2
http://marc.info/?l=bugtraq&m=139344343412337&w=2
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2012-2733.json
https://api.first.org/data/v1/epss?cve=CVE-2012-2733
http://secunia.com/advisories/51371
http://secunia.com/advisories/57126
https://h20566.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c03748878
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19218
https://svn.apache.org/viewvc?view=rev&rev=1350301
https://svn.apache.org/viewvc?view=rev&rev=1356208
http://svn.apache.org/viewvc?view=revision&revision=1350301
http://svn.apache.org/viewvc?view=revision&revision=1356208
http://tomcat.apache.org/security-6.html
http://tomcat.apache.org/security-7.html
http://www.securityfocus.com/bid/56402
http://www.securitytracker.com/id?1027729
http://www.ubuntu.com/usn/USN-1637-1
873695 https://bugzilla.redhat.com/show_bug.cgi?id=873695
cpe:2.3:a:apache:tomcat:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.0:alpha:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.0:alpha:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.10:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.11:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.11:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.12:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.12:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.13:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.13:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.14:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.14:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.15:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.15:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.16:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.16:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.17:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.17:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.18:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.18:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.19:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.19:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.1:alpha:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.1:alpha:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.2:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.20:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.20:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.24:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.24:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.26:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.26:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.27:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.27:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.28:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.28:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.29:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.29:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.2:alpha:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.2:alpha:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.2:beta:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.2:beta:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.3:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.30:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.30:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.31:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.31:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.32:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.32:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.33:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.33:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.35:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.35:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.4:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.4:alpha:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.4:alpha:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.5:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.5:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.6:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.6:alpha:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.6:alpha:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.7:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.7:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.7:alpha:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.7:alpha:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.7:beta:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.7:beta:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.8:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.8:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.8:alpha:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.8:alpha:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.9:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.9:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:6.0.9:beta:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:6.0.9:beta:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.0:beta:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.0:beta:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.10:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.11:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.11:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.12:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.12:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.13:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.13:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.14:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.14:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.15:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.15:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.16:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.16:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.17:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.17:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.18:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.18:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.19:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.19:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.2:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.2:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.20:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.20:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.21:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.21:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.22:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.22:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.23:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.23:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.25:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.25:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.2:beta:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.2:beta:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.3:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.4:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.4:beta:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.4:beta:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.5:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.5:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.6:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.7:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.7:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.8:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.8:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:7.0.9:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apache:tomcat:7.0.9:*:*:*:*:*:*:*
CVE-2012-2733 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2733
CVE-2012-2733 https://nvd.nist.gov/vuln/detail/CVE-2012-2733
GLSA-201412-29 https://security.gentoo.org/glsa/201412-29
RHSA-2013:0265 https://access.redhat.com/errata/RHSA-2013:0265
RHSA-2013:0266 https://access.redhat.com/errata/RHSA-2013:0266
USN-1637-1 https://usn.ubuntu.com/1637-1/
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2012-2733
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Exploit Prediction Scoring System (EPSS)
Percentile 0.95479
EPSS Score 0.20282
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:38:15.284198+00:00 Apache Tomcat Importer Import https://tomcat.apache.org/security-7.html 38.0.0