Bug 2460104 (CVE-2026-6785) - CVE-2026-6785 firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150
Summary: CVE-2026-6785 firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 1...
Keywords:
Status: NEW
Alias: CVE-2026-6785
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-21 14:03 UTC by OSIDB Bzimport
Modified: 2026-05-14 20:14 UTC (History)
7 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:10757 0 None None None 2026-04-27 10:44:23 UTC
Red Hat Product Errata RHSA-2026:10766 0 None None None 2026-04-27 12:29:10 UTC
Red Hat Product Errata RHSA-2026:10767 0 None None None 2026-04-27 12:17:19 UTC
Red Hat Product Errata RHSA-2026:12285 0 None None None 2026-04-30 13:51:07 UTC
Red Hat Product Errata RHSA-2026:13537 0 None None None 2026-05-04 16:48:17 UTC
Red Hat Product Errata RHSA-2026:15892 0 None None None 2026-05-11 02:05:13 UTC
Red Hat Product Errata RHSA-2026:17477 0 None None None 2026-05-14 08:24:42 UTC
Red Hat Product Errata RHSA-2026:17687 0 None None None 2026-05-14 19:48:17 UTC
Red Hat Product Errata RHSA-2026:17688 0 None None None 2026-05-14 20:14:35 UTC
Red Hat Product Errata RHSA-2026:17689 0 None None None 2026-05-14 19:53:36 UTC
Red Hat Product Errata RHSA-2026:17690 0 None None None 2026-05-14 19:43:39 UTC

Description OSIDB Bzimport 2026-04-21 14:03:05 UTC 
Memory safety bugs present in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149 and Thunderbird 149. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, and Firefox ESR 140.10.
Comment 1 errata-xmlrpc 2026-04-27 10:44:20 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:10757 https://access.redhat.com/errata/RHSA-2026:10757
Comment 2 errata-xmlrpc 2026-04-27 12:17:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:10767 https://access.redhat.com/errata/RHSA-2026:10767
Comment 3 errata-xmlrpc 2026-04-27 12:29:09 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:10766 https://access.redhat.com/errata/RHSA-2026:10766
Comment 4 errata-xmlrpc 2026-04-30 13:51:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:12285 https://access.redhat.com/errata/RHSA-2026:12285
Comment 5 errata-xmlrpc 2026-05-04 16:48:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:13537 https://access.redhat.com/errata/RHSA-2026:13537
Comment 6 errata-xmlrpc 2026-05-11 02:05:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:15892 https://access.redhat.com/errata/RHSA-2026:15892
Comment 7 errata-xmlrpc 2026-05-14 08:24:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:17477 https://access.redhat.com/errata/RHSA-2026:17477
Comment 8 errata-xmlrpc 2026-05-14 19:43:38 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:17690 https://access.redhat.com/errata/RHSA-2026:17690
Comment 9 errata-xmlrpc 2026-05-14 19:48:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:17687 https://access.redhat.com/errata/RHSA-2026:17687
Comment 10 errata-xmlrpc 2026-05-14 19:53:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:17689 https://access.redhat.com/errata/RHSA-2026:17689
Comment 11 errata-xmlrpc 2026-05-14 20:14:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:17688 https://access.redhat.com/errata/RHSA-2026:17688
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