RHSA-2025:17342: Important: thunderbird security update

Published Oct 6, 2025
·
Updated

Important: thunderbird security update

Other sources

Mozilla Thunderbird is a standalone mail and newsgroup client.Security Fix(es): firefox: thunderbird: Sandbox escape due to use-after-free in the Graphics: Canvas2D component (CVE-2025-10527) firefox: thunderbird: Incorrect boundary conditions in the JavaScript: GC component (CVE-2025-10532) firefox: thunderbird: Sandbox escape due to undefined behavior, invalid pointer in the Graphics: Canvas2D component (CVE-2025-10528) firefox: thunderbird: Same-origin policy bypass in the Layout component (CVE-2025-10529) firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 140.3, Thunderbird ESR 140.3, Firefox 143 and Thunderbird 143 (CVE-2025-10537) firefox: thunderbird: Information disclosure in the Networking: Cache component (CVE-2025-10536) firefox: thunderbird: Integer overflow in the SVG component (CVE-2025-10533) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

— Red Hat

Affected Software

10 affected componentsFixes available
Red Hat Red Hat Enterprise Linux Server - AUS
Red Hat Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux Server - TUS
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension
Red Hat Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
redhat/thunderbird<140.3.0-1.el8_6
140.3.0-1.el8_6
redhat/thunderbird<140.3.0-1.el8_6
140.3.0-1.el8_6
redhat/thunderbird-debugsource<140.3.0-1.el8_6
140.3.0-1.el8_6
redhat/thunderbird<140.3.0-1.el8_6
140.3.0-1.el8_6
redhat/thunderbird-debugsource<140.3.0-1.el8_6
140.3.0-1.el8_6

Remediation

Event History

Oct 6, 2025
Advisory Published
via Red Hat·01:01 AM
Data Sourced
via Red Hat·01:01 AM
DescriptionSeverityAffected Software
Oct 10, 2025
Advisory Published
via Red Hat·01:56 AM
Data Sourced
via Red Hat·01:56 AM
Remedy

Frequently Asked Questions

1

Is there a fix specifically for the Thunderbird debug source in RHSA-2025:17342?

Yes, the fix for RHSA-2025:17342 includes updates for the Thunderbird debug source package to version 140.3.0-1.el8_6.

Contact

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