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Vulnerability record · CVE-2020-11931 · published 15 May 2020

CVE-2020-11931: Pulseaudio improper access control vulnerability

Pulseaudio · Pulseaudio

An Ubuntu-specific modification to Pulseaudio to provide security mediation for Snap-packaged applications was found to have a bypass of intended access restriction for snaps which plugs any of pulseaudio, audio-playback or audio-record via unloading the pulseaudio snap policy module. This issue affects: pulseaudio 1:8.0 versions prior to 1:8.0-0ubuntu3.12; 1:11.1 versions prior to 1:11.1-1ubuntu7.7; 1:13.0 versions prior to 1:13.0-1ubuntu1.2; 1:13.99.1 versions prior to 1:13.99.1-1ubuntu3.2;

3.3 CVSS 3.1 Low EPSS 0.33% · top 76.4% CWE-284 · Improper access controlCWE-668 · Exposure of resource to wrong sphere
3.3CVSS 3.1 base score, v2 2.1
0.33%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

An Ubuntu-specific modification to Pulseaudio to provide security mediation for Snap-packaged applications was found to have a bypass of intended access restriction for snaps which plugs any of pulseaudio, audio-playback or audio-record via unloading the pulseaudio snap policy module. This issue affects: pulseaudio 1:8.0 versions prior to 1:8.0-0ubuntu3.12; 1:11.1 versions prior to 1:11.1-1ubuntu7.7; 1:13.0 versions prior to 1:13.0-1ubuntu1.2; 1:13.99.1 versions prior to 1:13.99.1-1ubuntu3.2;

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://forum.snapcraft.io/t/audio-switcher-pulseaudio-interface-auto-connect-request/16648/3 Third Party Advisory
https://usn.ubuntu.com/4355-1/ Third Party Advisory
https://forum.snapcraft.io/t/audio-switcher-pulseaudio-interface-auto-connect-request/16648/3 Third Party Advisory
https://usn.ubuntu.com/4355-1/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-11931), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.