CVE-2012-4193

medium

Published 2012-10-12 · Modified 2026-04-29

CVSS v3

—

CVSS v2

6.8

VIR risk

6.8

Description

Mozilla Firefox before 16.0.1, Firefox ESR 10.x before 10.0.9, Thunderbird before 16.0.1, Thunderbird ESR 10.x before 10.0.9, and SeaMonkey before 2.13.1 omit a security check in the defaultValue function during the unwrapping of security wrappers, which allows remote attackers to bypass the Same Origin Policy and read the properties of a Location object, or execute arbitrary JavaScript code, via a crafted web site.

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=720619

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — http://www.mozilla.org/security/announce/2012/mfsa2012-89.html

OS impact

OS	Version	Status
rhel	5.0	affected
rhel	6.0	affected
rhel	6.3	affected
ubuntu	10.04	affected
ubuntu	11.04	affected
ubuntu	11.10	affected
ubuntu	12.04	affected
suse	10	affected
suse	11	affected

Application impact

Vendor	Product	Versions	Fixed
mozilla	firefox	`{"endExcluding":"16.0.1"}`	`16.0.1`
mozilla	seamonkey	`{"endExcluding":"2.13.1"}`	`2.13.1`
mozilla	thunderbird	`{"endExcluding":"16.0.1"}`	`16.0.1`
mozilla	thunderbird_esr	`{"startIncluding":"10.0","endExcluding":"10.0.9"}`	`10.0.9`

References

CWEs

CWE-346

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