CVE-2016-5258

Name: CVE-2016-5258
Creator: NVD / NIST
Published: 2016-08-05T01:59:14.063+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.29%

Last modified Jun 17, 2026

CVE-2016-5258 is a vulnerability of currently unknown severity. Use-after-free vulnerability in the WebRTC socket thread in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code by leveraging incorrect free operations on DTLS objects during the shutdown of a WebRTC session.. EPSS estimates a 3.29% chance of exploitation in the next 30 days.

Description

Use-after-free vulnerability in the WebRTC socket thread in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code by leveraging incorrect free operations on DTLS objects during the shutdown of a WebRTC session.

Metrics

EPSS Probability

3.29%

86.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Oracle	Linux	5.0
Oracle	Linux	6
Oracle	Linux	7
Mozilla	Firefox	<= 47.0.1
Mozilla	Firefox	45.1.0
Mozilla	Firefox	45.1.1
Mozilla	Firefox	45.2.0
Mozilla	Firefox	45.3.0

References

Timeline

Published: Aug 5, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-5258?

How severe is CVE-2016-5258?

Severity scoring for CVE-2016-5258 is pending analysis. The EPSS model estimates a 3.29% probability of exploitation in the next 30 days.

How do I fix CVE-2016-5258?

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-2016-5258?

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

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Source: NVD / NIST