Is CVE-2014-1511 in the CISA KEV catalog?

No. CVE-2014-1511 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-1511?

CVE-2014-1511 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2014-1511?

CVE-2014-1511 has an EPSS score of 83.63% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2014-1511?

Upgrade DeveloperEdition to 28.0 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2014-1511

CRITICALEPSS 100th pctl

9.8

CVSS v3

NVD

Description

Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 allow remote attackers to bypass the popup blocker via unspecified vectors.

CWE-269Improper Privilege Management

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:28.0Fixed in:28.0Mozilla

Affected:24.0 24.4Fixed in:24.4Mozilla

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

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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

83.63%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

References

Exploit1

bugzilla.mozilla.org

Vendor Advisory1

mozilla.org

Third-Party Advisory12

Related Vulnerabilities

Other CWE-269 (Improper Privilege Management) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-12635	Critical	9.8	100%	-	Fix
CVE-2022-24637	Critical	9.8	99%	-	Fix
CVE-2017-5689	Critical	9.8	92%	KEV	Fix
CVE-2020-3243	Critical	9.8	88%	-	-
CVE-2024-21888	High	8.8	87%	-	-
CVE-2022-0441	Critical	9.8	85%	-	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.