Is CVE-2012-5354 in the CISA KEV catalog?

No. CVE-2012-5354 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-5354?

CVE-2012-5354 has a CVSS v2 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2012-5354?

CVE-2012-5354 has an EPSS score of 1.68% (74th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2012-5354?

Upgrade DeveloperEdition to 16.0 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2012-5354

MEDIUMEPSS 74th pctl

6.8

CVSS v2

NVD

Description

Mozilla Firefox before 16.0, Thunderbird before 16.0, and SeaMonkey before 2.13 do not properly handle navigation away from a web page that has multiple menus of SELECT elements active, which allows remote attackers to conduct clickjacking attacks via vectors involving an XPI file, the window.open method, and the Geolocation API, a different vulnerability than CVE-2012-3984.

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:16.0Fixed in:16.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:16.0Fixed in:16.0Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:16.0Fixed in:16.0Mozilla

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

1.68%probability of exploitation in 30 days

74thpercentile

Elevated risk: more likely to be exploited than 74% of all known CVEs.

References

Vendor Advisory2

Third-Party Advisory1

oval.cisecurity.org

Other references3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.