CVE-2012-4191

critical
Published 2012-10-12 · Modified 2026-04-29
CVSS v3
CVSS v2
9.3
VIR risk
9.3

Description

The mozilla::net::FailDelayManager::Lookup function in the WebSockets implementation in Mozilla Firefox before 16.0.1, Thunderbird before 16.0.1, and SeaMonkey before 2.13.1 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — https://bugzilla.mozilla.org/show_bug.cgi?id=798045

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — http://www.mozilla.org/security/announce/2012/mfsa2012-88.html

OS impact

OSVersionStatusFixed in
ubuntu ubuntu10.04affected
ubuntu ubuntu11.04affected
ubuntu ubuntu11.10affected
ubuntu ubuntu12.04affected

Application impact

VendorProductVersionsFixed
mozilla mozillafirefox{"endExcluding":"16.0.1"}16.0.1
mozilla mozillaseamonkey{"endExcluding":"2.13.1"}2.13.1
mozilla mozillathunderbird{"endExcluding":"16.0.1"}16.0.1

References

CWEs

CWE-787

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