Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 68.10.0. Security Fix: * Mozilla: Memory corruption due to missing sign-extension for ValueTags on ARM64 * Mozilla: Information disclosure due to manipulated URL object * Mozilla: Use-after-free in nsGlobalWindowInner * Mozilla: Use-After-Free when trying to connect to a STUN server * Mozilla: Add-On updates did not respect the same certificate trust rules as software updates For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.