Is CVE-2015-4486 in the CISA KEV catalog?

No. CVE-2015-4486 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-4486?

CVE-2015-4486 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2015-4486?

CVE-2015-4486 has an EPSS score of 6.61% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-4486?

Upgrade libvpx on debian 11 to 1.4.0-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2015-4486

HIGHEPSS 93th pctl

10.0

CVSS v2

NVD

Description

The decrease_ref_count function in libvpx in Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds read) via malformed WebM video data.

CWE-119Buffer Overflow

How to fix

Remediation Available

libvpxDebian

Fixed in:1.4.0-1CVE-2015-4486

firefoxUbuntu

Fixed in:40.0+build4-0ubuntu0.14.04.1USN-2702-1

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

6.61%probability of exploitation in 30 days

93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

Vendor Advisory1

mozilla.org

Third-Party Advisory5

Issue Tracking1

bugzilla.mozilla.org

Other references9

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

Embed a live status badge for CVE-2015-4486

Markdown

[![CVE-2015-4486](https://tridentstack.com/cve/badge/CVE-2015-4486.svg)](https://tridentstack.com/cve/CVE-2015-4486)

HTML

<a href="https://tridentstack.com/cve/CVE-2015-4486"><img src="https://tridentstack.com/cve/badge/CVE-2015-4486.svg" alt="CVE-2015-4486"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.