CVE-2015-4516: mozilla firefox 7PK - Security Features
Vulnerability summary
CVE-2015-4516 is a high (CVSS 9.3) 7PK - Security Features vulnerability in mozilla firefox. EPSS estimates a 2.94% chance of exploitation in the next 30 days, higher than 87.1% of scored vulnerabilities.
Not severe (CVSS 9.3, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 3Timeline
- 24-09-2015PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
Mozilla Firefox before 41.0 allows remote attackers to bypass certain ECMAScript 5 (aka ES5) API protection mechanisms and modify immutable properties, and consequently execute arbitrary JavaScript code with chrome privileges, via a crafted web page that does not use ES5 APIs.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
2.94%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
Decrease -0.52 pp
From 3.46% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.
Mozilla1 product
- firefox≤ 40.0.3
Ubuntu1 product
- firefox< 41.0+build3-0ubuntu0.14.04.1
2 vendors · 2 products
References
15 links- bugzilla.mozilla.org/show_bug.cgi?id=904886X Refsource CONFIRM
- www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlX Refsource CONFIRM