Is CVE-2014-1582 in the CISA KEV catalog?

No. CVE-2014-1582 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-1582?

CVE-2014-1582 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2014-1582?

CVE-2014-1582 has an EPSS score of 1.20% (64th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2014-1582?

Upgrade firefox on ubuntu 14.04 to 33.0+build2-0ubuntu0.14.04.1 or later.

CVE & CISA-KEV Catalog

CVE-2014-1582

MEDIUM

4.3

CVSS v2

NVD

Description

The Public Key Pinning (PKP) implementation in Mozilla Firefox before 33.0 does not properly consider the connection-coalescing behavior of SPDY and HTTP/2 in the case of a shared IP address, which allows man-in-the-middle attackers to bypass an intended pinning configuration and spoof a web site by providing a valid certificate from an arbitrary recognized Certification Authority.

CWE-310Cryptographic Issues

How to fix

Remediation Available

firefoxUbuntu

Fixed in:33.0+build2-0ubuntu0.14.04.1USN-2372-1

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

1.20%probability of exploitation in 30 days

64thpercentile

Moderate risk: more likely to be exploited than 64% of all known CVEs.

References

Vendor Advisory1

mozilla.org

Other references12

Related Vulnerabilities

Other CWE-310 (Cryptographic Issues) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-3566	Low	3.4	100%	-	Fix
CVE-2015-4000	Low	3.7	100%	-	Fix
CVE-2015-0204	Medium	4.3	99%	-	Fix
CVE-2016-2107	Medium	5.9	89%	-	Fix
CVE-2016-0800	Medium	5.9	82%	-	Fix
CVE-2014-8684	Critical	9.8	72%	-	-

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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.