What’s Vulnerable › Vulnerabilities

CVE-2011-3659

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 36.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2012-02-01 · updated 2026-06-16
• Weakness: CWE-416

Description

Use-after-free vulnerability in Mozilla Firefox before 3.6.26 and 4.x through 9.0, Thunderbird before 3.1.18 and 5.0 through 9.0, and SeaMonkey before 2.7 might allow remote attackers to execute arbitrary code via vectors related to incorrect AttributeChildRemoved notifications that affect access to removed nsDOMAttribute child nodes.

Affected products

• Mozilla Firefox: before 3.6.26; from 4.0 before 10.0 — fixed in 10.0, 3.6.26
• Mozilla Seamonkey: before 2.7 — fixed in 2.7
• Mozilla Thunderbird: before 3.1.18; from 5.0 before 10.0 — fixed in 10.0, 3.1.18
• Opensuse: 11.4
• SUSE Linux Enterprise Server 15 SP1: 10-sp4, 11-sp1
• SUSE Linux Enterprise Server: 10-sp4, 11-sp1
• SUSE Linux Enterprise Software Development Kit: 10-sp4, 11-sp1

How to fix

Upgrade to a fixed version: Mozilla Firefox 10.0, 3.6.26; Mozilla Seamonkey 2.7; Mozilla Thunderbird 10.0, 3.1.18. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00003.html
• http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00007.html
• http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00011.html
• http://www.mandriva.com/security/advisories?name=MDVSA-2012:013
• http://www.mozilla.org/security/announce/2012/mfsa2012-04.html
• https://bugzilla.mozilla.org/show_bug.cgi?id=708198
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14697
• http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00003.html
• http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00007.html
• http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00011.html
• http://www.mandriva.com/security/advisories?name=MDVSA-2012:013
• http://www.mozilla.org/security/announce/2012/mfsa2012-04.html

Get alerted when CVE-2011-3659 or the next vulnerability affects your stack