CVE-2015-4516

Name: CVE-2015-4516
Creator: NVD / NIST
Published: 2015-09-24T04:59:16.27+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.46%

Last modified Jun 17, 2026

CVE-2015-4516 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 3.46% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

3.46%

87.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-254

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	<= 40.0.3

References

Timeline

Published: Sep 24, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-4516?

How severe is CVE-2015-4516?

Severity scoring for CVE-2015-4516 is pending analysis. The EPSS model estimates a 3.46% probability of exploitation in the next 30 days.

How do I fix CVE-2015-4516?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-4516?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST