Is CVE-2013-0746 in the CISA KEV catalog?

No. CVE-2013-0746 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2013-0746?

CVE-2013-0746 has a CVSS v2 base score of 9.3 (HIGH).

What is the EPSS score for CVE-2013-0746?

CVE-2013-0746 has an EPSS score of 4.49% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2013-0746?

Upgrade DeveloperEdition to 17.0.2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2013-0746

HIGHEPSS 90th pctl

9.3

CVSS v2

NVD

Description

Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and 17.x before 17.0.2, Thunderbird before 17.0.2, Thunderbird ESR 10.x before 10.0.12 and 17.x before 17.0.2, and SeaMonkey before 2.15 do not properly implement quickstubs that use the jsval data type for their return values, which allows remote attackers to execute arbitrary code or cause a denial of service (compartment mismatch and application crash) via crafted JavaScript code that is not properly handled during garbage collection.

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:17.0 17.0.2Fixed in:17.0.2Mozilla

Affected:18.0Fixed in:18.0Mozilla

Affected:10.0 10.0.12Fixed in:10.0.12Mozilla

Mozilla Firefox (en-US)Windows application

Affected:10.0 10.0.12Fixed in:10.0.12Mozilla

Affected:17.0 17.0.2Fixed in:17.0.2Mozilla

Affected:18.0Fixed in:18.0Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:17.0.2Fixed in:17.0.2Mozilla

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

4.49%probability of exploitation in 30 days

90thpercentile

High risk: more likely to be exploited than 90% of all known CVEs.

References

Patch1

bugzilla.mozilla.org

Vendor Advisory1

mozilla.org

Third-Party Advisory10

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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.