Debian Security Advisory

DLA-2679-1 thunderbird -- LTS security update

Date Reported:
07 Jun 2021
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2021-29956, CVE-2021-29957, CVE-2021-29967.
More information:

Multiple security issues were discovered in Thunderbird, which could result in the execution of arbitrary code. In addition two security issues were addressed in the OpenPGP support.

For Debian 9 stretch, these problems have been fixed in version 1:78.11.0-1~deb9u1.

We recommend that you upgrade your thunderbird packages.

For the detailed security status of thunderbird please refer to its security tracker page at:

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