Is CVE-2014-1478 in the CISA KEV catalog?

No. CVE-2014-1478 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-1478?

CVE-2014-1478 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2014-1478?

CVE-2014-1478 has an EPSS score of 6.78% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2014-1478?

Upgrade DeveloperEdition to 27.0 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2014-1478

HIGHEPSS 93th pctl

10.0

CVSS v2

NVD

Description

Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 27.0 and SeaMonkey before 2.24 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors related to the MPostWriteBarrier class in js/src/jit/MIR.h and stack alignment in js/src/jit/AsmJS.cpp in OdinMonkey, and unknown other vectors.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:27.0Fixed in:27.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:27.0Fixed in:27.0Mozilla

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

6.78%probability of exploitation in 30 days

93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix

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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.