Is CVE-2015-0816 in the CISA KEV catalog?

No. CVE-2015-0816 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-0816?

CVE-2015-0816 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2015-0816?

CVE-2015-0816 has an EPSS score of 66.94% (99th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-0816?

Upgrade firefox on ubuntu 14.04 to 37.0+build2-0ubuntu0.14.04.1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2015-0816

MEDIUMEPSS 99th pctl

5.0

CVSS v2

NVD

Description

Mozilla Firefox before 37.0, Firefox ESR 31.x before 31.6, and Thunderbird before 31.6 do not properly restrict resource: URLs, which makes it easier for remote attackers to execute arbitrary JavaScript code with chrome privileges by leveraging the ability to bypass the Same Origin Policy, as demonstrated by the resource: URL associated with PDF.js.

CWE-264Permissions, Privileges, and Access Controls

How to fix

Remediation Available

firefoxUbuntu

Fixed in:37.0+build2-0ubuntu0.14.04.1USN-2550-1

thunderbirdUbuntu

Fixed in:1:31.6.0+build1-0ubuntu0.14.04.1USN-2552-1

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 v2 Vector

No CVSS vector data available.

Exploit Intelligence

66.94%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

Vendor Advisory1

mozilla.org

Other references17

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.