Debian Security Advisory

DLA-2562-1 mumble -- LTS security update

Date Reported:
18 Feb 2021
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2021-27229.
More information:

It was discovered that there was a a remote code execution vulnerability in Mumble, a VoIP client commonly used for group chats. The exploit could have been been triggered by a maliciously crafted URL on the server list.

  • CVE-2021-27229

    Mumble before 1.3.4 allows remote code execution if a victim navigates to a crafted URL on a server list and clicks on the Open Webpage text.

For Debian 9 Stretch, these problems have been fixed in version 1.2.18-1+deb9u2.

We recommend that you upgrade your mumble packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: