Multiple security issues have been found in Thunderbird, which may lead to the execution of arbitrary code or denial of service.

For the stable distribution (buster), these problems have been fixed in version 1:78.4.0-1~deb10u1.

We recommend that you upgrade your thunderbird packages.

For the detailed security status of thunderbird please refer to its security tracker page at: \ https://security-tracker.debian.org/tracker/thunderbird