Is CVE-2015-7197 in the CISA KEV catalog?

No. CVE-2015-7197 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-7197?

CVE-2015-7197 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2015-7197?

CVE-2015-7197 has an EPSS score of 2.54% (83th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-7197?

Upgrade firefox on ubuntu 14.04 to 42.0+build2-0ubuntu0.14.04.1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2015-7197

MEDIUMEPSS 83th pctl

5.0

CVSS v2

NVD

Description

Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 improperly control the ability of a web worker to create a WebSocket object, which allows remote attackers to bypass intended mixed-content restrictions via crafted JavaScript code.

CWE-264Permissions, Privileges, and Access Controls

How to fix

Remediation Available

firefoxUbuntu

Fixed in:42.0+build2-0ubuntu0.14.04.1USN-2785-1

thunderbirdUbuntu

Fixed in:1:38.4.0+build3-0ubuntu0.14.04.1USN-2819-1

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

2.54%probability of exploitation in 30 days

83rdpercentile

Elevated risk: more likely to be exploited than 83% of all known CVEs.

References

Related Vulnerabilities

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2012-1456	Medium	4.3	100%	-	-
CVE-2012-1459	Medium	4.3	100%	-	Fix
CVE-2012-1446	Medium	4.3	100%	-	-
CVE-2012-1443	Medium	4.3	100%	-	-
CVE-2012-1442	Medium	4.3	99%	-	-
CVE-2012-1457	Medium	4.3	98%	-	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.