CVE-2011-3659

critical
Published 2012-02-01 ยท Modified 2026-04-29
CVSS v3
โ€”
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
10.0

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.

Predictions

Exploit likelihood
20%
Patch ETA
โ€”

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-18870 remote windows verified
Metasploit ยท 2012-05-13

Mozilla Firefox 8/9 - 'AttributeChildRemoved()' Use-After-Free (Metasploit)

Source code queued for fetch โ€” refresh in a moment.

Metasploit modules

Firefox 8/9 AttributeChildRemoved() Use-After-Free
Source fetch failed: fetch_error โ€” view the original via the link above.

OS impact

suse SUSE Affected 3 releases
VersionStatusFixed in
11.4 Affected โ€”
11 Affected โ€”
10 Affected โ€”

Application impact

VendorProductVersionsFixed
mozilla mozillafirefox{"endExcluding":"3.6.26"}3.6.26
mozilla mozillaseamonkey{"endExcluding":"2.7"}2.7
mozilla mozillathunderbird{"endExcluding":"3.1.18"}3.1.18

References

CWEs

CWE-416

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.