CVE-2019-11748

Name: CVE-2019-11748
Creator: NVD / NIST
Published: 2019-09-27T18:15:12.727+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.03%

Last modified Jun 17, 2026

CVE-2019-11748 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. WebRTC in Firefox will honor persisted permissions given to sites for access to microphone and camera resources even when in a third-party context. In light of recent high profile vulnerabilities in other software, a decision was made to no longer persist these permissions. EPSS estimates a 1.03% chance of exploitation in the next 30 days.

Description

WebRTC in Firefox will honor persisted permissions given to sites for access to microphone and camera resources even when in a third-party context. In light of recent high profile vulnerabilities in other software, a decision was made to no longer persist these permissions. This avoids the possibility of trusted WebRTC resources being invisibly embedded in web content and abusing permissions previously given by users. Users will now be prompted for permissions on each use. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.03%

59.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-281

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=1564588Issue 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=1564588Issue 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-2019-11748?

How severe is CVE-2019-11748?

CVE-2019-11748 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.

How do I fix CVE-2019-11748?

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-2019-11748?

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

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Source: NVD / NIST