CVE-2011-0066

Severity: critical (CVSS 10.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-05-07 · updated 2026-06-16
Weakness: CWE-399

Description

Use-after-free vulnerability in Mozilla Firefox before 3.5.19 and 3.6.x before 3.6.17, and SeaMonkey before 2.0.14, allows remote attackers to execute arbitrary code via vectors related to OBJECT's mObserverList.

Affected products

Mozilla Firefox: through 3.5.18; 3.6, 3.6.2, 3.6.3, 3.6.4, 3.6.6, 3.6.7 (+99)
Mozilla Seamonkey: through 2.0.13; 1.0, 1.0-alpha, 1.0-beta, 1.0.1, 1.0.2, 1.0.3 (+51)

References

http://downloads.avaya.com/css/P8/documents/100144158
http://www.debian.org/security/2011/dsa-2227
http://www.debian.org/security/2011/dsa-2228
http://www.debian.org/security/2011/dsa-2235
http://www.mandriva.com/security/advisories?name=MDVSA-2011:079
http://www.mozilla.org/security/announce/2011/mfsa2011-13.html
https://bugzilla.mozilla.org/show_bug.cgi?id=634983
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13970
http://downloads.avaya.com/css/P8/documents/100144158
http://www.debian.org/security/2011/dsa-2227
http://www.debian.org/security/2011/dsa-2228
http://www.debian.org/security/2011/dsa-2235

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