CVE-2012-1967

CVE-2012-1967 is a critical-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Mozilla Firefox 4.x through 13.0, Firefox ESR 10.x before 10.0.6, Thunderbird 5.0 through 13.0, Thunderbird ESR 10.x before 10.0.6, and SeaMonkey before 2.11 do not properly implement the JavaScript sandbox utility, which allows remote attackers to execute arbitrary JavaScript code with improper privileges via a javascript: URL.

Frequently asked questions

What is CVE-2012-1967?
Mozilla Firefox 4.x through 13.0, Firefox ESR 10.x before 10.0.6, Thunderbird 5.0 through 13.0, Thunderbird ESR 10.x before 10.0.6, and SeaMonkey before 2.11 do not properly implement the JavaScript sandbox utility, which allows remote attackers to execute arbitrary JavaScript code with improper privileges via a javascript: URL.
How severe is CVE-2012-1967?
CVE-2012-1967 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2012-1967 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-1967?
CVE-2012-1967 primarily affects Mozilla Firefox. In total, 127 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-1967?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2012-1967 published?
CVE-2012-1967 was published on 2012-07-18 and last updated on 2026-06-16.

References

Affected products (127)

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