CVE-2019-11749

Name: CVE-2019-11749
Creator: NVD / NIST
Published: 2019-09-27T18:15:12.913+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.90%

Last modified Jun 17, 2026

CVE-2019-11749 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. A vulnerability exists in WebRTC where malicious web content can use probing techniques on the getUserMedia API using constraints to reveal device properties of cameras on the system without triggering a user prompt or notification. This allows for the potential fingerprinting of users. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

A vulnerability exists in WebRTC where malicious web content can use probing techniques on the getUserMedia API using constraints to reveal device properties of cameras on the system without triggering a user prompt or notification. This allows for the potential fingerprinting of users. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

EPSS Probability

0.90%

55.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 69.0
Mozilla	Firefox Esr	< 68.1.0

References

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1565374Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-25/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-26/Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1565374Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-25/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-26/Vendor Advisory

Timeline

Published: Sep 27, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-11749?

How severe is CVE-2019-11749?

CVE-2019-11749 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.

How do I fix CVE-2019-11749?

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-2019-11749?

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

Scan your code now

Source: NVD / NIST