Is CVE-2014-1514 in the CISA KEV catalog?

No. CVE-2014-1514 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-1514?

CVE-2014-1514 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2014-1514?

CVE-2014-1514 has an EPSS score of 6.09% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2014-1514?

Upgrade DeveloperEdition to 24.4 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2014-1514

CRITICALEPSS 93th pctl

9.8

CVSS v3

NVD

Description

vmtypedarrayobject.cpp in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 does not validate the length of the destination array before a copy operation, which allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds write and application crash) by triggering incorrect use of the TypedArrayObject class.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:24.0 24.4Fixed in:24.4Mozilla

Affected:28.0Fixed in:28.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:24.0 24.4Fixed in:24.4Mozilla

Affected:28.0Fixed in:28.0Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:24.4Fixed in:24.4Mozilla

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

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

6.09%probability of exploitation in 30 days

93rdpercentile

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

References

Exploit1

bugzilla.mozilla.org

Vendor Advisory1

mozilla.org

Third-Party Advisory12

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 2026-05-06.