Known Vulnerabilities for Thunderbird by Mozilla

Listed below are 10 of the newest known vulnerabilities associated with "Thunderbird" by "Mozilla".

These CVEs are retrieved based on exact matches on listed software, hardware, and vendor information (CPE data) as well as a keyword search to ensure the newest vulnerabilities with no officially listed software information are still displayed.

Data on known vulnerable versions is also displayed based on information from known CPEs

Known Vulnerabilities

CVE Shortened Description Severity Publish Date Last Modified
CVE-2026-6784 json Memory safety bugs present in Firefox 149 and Thunderbird 149. Some of these bugs showed evidence of memory corruption and we... Not Provided 2026-04-21 2026-04-22
CVE-2026-6783 json Incorrect boundary conditions, integer overflow in the Audio/Video: Playback component. This vulnerability was fixed in Firef... Not Provided 2026-04-21 2026-04-21
CVE-2026-6782 json Information disclosure in the IP Protection component. This vulnerability was fixed in Firefox 150 and Thunderbird 150. Not Provided 2026-04-21 2026-04-22
CVE-2026-6781 json Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150. Not Provided 2026-04-21 2026-04-21
CVE-2026-6780 json Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150. Not Provided 2026-04-21 2026-04-21
CVE-2026-6779 json Other issue in the JavaScript Engine component. This vulnerability was fixed in Firefox 150 and Thunderbird 150. Not Provided 2026-04-21 2026-04-21
CVE-2026-6778 json Invalid pointer in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150. Not Provided 2026-04-21 2026-04-21
CVE-2026-6777 json Other issue in the Networking: DNS component. This vulnerability was fixed in Firefox 150 and Thunderbird 150. Not Provided 2026-04-21 2026-04-21
CVE-2026-6776 json Incorrect boundary conditions in the WebRTC: Networking component. This vulnerability was fixed in Firefox 150, Firefox ESR 1... Not Provided 2026-04-21 2026-04-21
CVE-2026-6775 json Incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 150 and Thunderbird 150. Not Provided 2026-04-21 2026-04-21
Results limited to 10 most recent vulnerabilities

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationMozillaThunderbird9.0.1
ApplicationMozillaThunderbird9.0
ApplicationMozillaThunderbird9.0
ApplicationMozillaThunderbird9.0
ApplicationMozillaThunderbird9.0
ApplicationMozillaThunderbird9.0
ApplicationMozillaThunderbird9.0
ApplicationMozillaThunderbird8.0
ApplicationMozillaThunderbird8.0
ApplicationMozillaThunderbird8.0
ApplicationMozillaThunderbird8.0
ApplicationMozillaThunderbird8.0
ApplicationMozillaThunderbird8.0
ApplicationMozillaThunderbird78.6.0
ApplicationMozillaThunderbird78.5.1
ApplicationMozillaThunderbird78.4.0
ApplicationMozillaThunderbird78.3
ApplicationMozillaThunderbird78.2
ApplicationMozillaThunderbird78.1.1
ApplicationMozillaThunderbird78.1.0
Results limited to 20 most recent known configurations
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report