CVE-2012-1952

CVE-2012-1952 is a critical-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Description

The nsTableFrame::InsertFrames function in 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 does not properly perform a cast of a frame variable during processing of mixed row-group and column-group frames, which might allow remote attackers to execute arbitrary code via a crafted web site.

Frequently asked questions

What is CVE-2012-1952?
The nsTableFrame::InsertFrames function in 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 does not properly perform a cast of a frame variable during processing of mixed row-group and column-group frames, which might allow remote attackers to execute arbitrary code via a crafted web site.
How severe is CVE-2012-1952?
CVE-2012-1952 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2012-1952 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-1952?
CVE-2012-1952 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-2012-1952?
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-2012-1952 published?
CVE-2012-1952 was published on 2012-07-18 and last updated on 2026-06-16.

References

Affected products (127)

More vulnerabilities in Mozilla Firefox

All CVEs affecting Mozilla Firefox →

Other CWE-399 (Resource Management Errors) vulnerabilities

Browse all CWE-399 (Resource Management Errors) vulnerabilities →