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CVE-2011-3659

HighPublished

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...

Published: Feb 1, 2012
Updated: Aug 6, 2024
Assigning CNA: mitre
Evidence observed: May 13, 2012

Primary CVSS

9.3/ 10High

nvd · CVSS 2.0

AV:N/AC:M/Au:N/C:C/I:C/A:C

EPSS probability estimate

36.8%

Moderate · next 30 days

Percentile: 98.5%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

Mozilla Firefox 8/9 - 'AttributeChildRemoved()' Use-After-Free (Metasploit)Exploit
Metasploit · windows · May 13, 2012

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