Is CVE-2014-8642 in the CISA KEV catalog?

No. CVE-2014-8642 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2014-8642?

CVE-2014-8642 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2014-8642?

CVE-2014-8642 has an EPSS score of 1.57% (72th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2014-8642?

Upgrade firefox on ubuntu 14.04 to 35.0+build3-0ubuntu0.14.04.2 or later.

CVE & CISA-KEV Catalog

CVE-2014-8642

MEDIUMEPSS 72th pctl

4.3

CVSS v2

NVD

Description

Mozilla Firefox before 35.0 and SeaMonkey before 2.32 do not consider the id-pkix-ocsp-nocheck extension in deciding whether to trust an OCSP responder, which makes it easier for remote attackers to obtain sensitive information by sniffing the network during a session in which there was an incorrect decision to accept a compromised and revoked certificate.

CWE-310Cryptographic Issues

How to fix

Remediation Available

firefoxUbuntu

Fixed in:35.0+build3-0ubuntu0.14.04.2USN-2458-1

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

1.57%probability of exploitation in 30 days

72ndpercentile

Elevated risk: more likely to be exploited than 72% of all known CVEs.

References

Vendor Advisory1

mozilla.org

Other references15

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.