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: 2026-05-20 14:17 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
Red Hat Product Errata RHSA-2026:19041 0 None None None 2026-05-19 13:06:18 UTC
Red Hat Product Errata RHSA-2026:19131 0 None None None 2026-05-19 16:06:26 UTC
Red Hat Product Errata RHSA-2026:19201 0 None None None 2026-05-19 18:01:27 UTC
Red Hat Product Errata RHSA-2026:19348 0 None None None 2026-05-19 21:38:10 UTC
Red Hat Product Errata RHSA-2026:19461 0 None None None 2026-05-20 02:00:54 UTC
Red Hat Product Errata RHSA-2026:19462 0 None None None 2026-05-20 03:05:57 UTC
Red Hat Product Errata RHSA-2026:19463 0 None None None 2026-05-20 02:19:21 UTC
Red Hat Product Errata RHSA-2026:19464 0 None None None 2026-05-20 03:01:13 UTC
Red Hat Product Errata RHSA-2026:19465 0 None None None 2026-05-20 02:08:44 UTC
Red Hat Product Errata RHSA-2026:19466 0 None None None 2026-05-20 03:03:47 UTC
Red Hat Product Errata RHSA-2026:19467 0 None None None 2026-05-20 02:53:22 UTC
Red Hat Product Errata RHSA-2026:19468 0 None None None 2026-05-20 02:51:53 UTC
Red Hat Product Errata RHSA-2026:19469 0 None None None 2026-05-20 02:59:25 UTC
Red Hat Product Errata RHSA-2026:19542 0 None None None 2026-05-20 07:32:38 UTC
Red Hat Product Errata RHSA-2026:19655 0 None None None 2026-05-20 13:03:05 UTC
Red Hat Product Errata RHSA-2026:19704 0 None None None 2026-05-20 14:17:29 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
Comment 12 errata-xmlrpc 2026-05-19 13:06:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19041 https://access.redhat.com/errata/RHSA-2026:19041
Comment 13 errata-xmlrpc 2026-05-19 16:06:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19131 https://access.redhat.com/errata/RHSA-2026:19131
Comment 14 errata-xmlrpc 2026-05-19 18:01:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:19201 https://access.redhat.com/errata/RHSA-2026:19201
Comment 15 errata-xmlrpc 2026-05-19 21:38:09 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:19348 https://access.redhat.com/errata/RHSA-2026:19348
Comment 16 errata-xmlrpc 2026-05-20 02:00:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:19461 https://access.redhat.com/errata/RHSA-2026:19461
Comment 17 errata-xmlrpc 2026-05-20 02:08:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:19465 https://access.redhat.com/errata/RHSA-2026:19465
Comment 18 errata-xmlrpc 2026-05-20 02:19:19 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:19463 https://access.redhat.com/errata/RHSA-2026:19463
Comment 19 errata-xmlrpc 2026-05-20 02:51:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2026:19468 https://access.redhat.com/errata/RHSA-2026:19468
Comment 20 errata-xmlrpc 2026-05-20 02:53:21 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-2026:19467 https://access.redhat.com/errata/RHSA-2026:19467
Comment 21 errata-xmlrpc 2026-05-20 02:59:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:19469 https://access.redhat.com/errata/RHSA-2026:19469
Comment 22 errata-xmlrpc 2026-05-20 03:01:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:19464 https://access.redhat.com/errata/RHSA-2026:19464
Comment 23 errata-xmlrpc 2026-05-20 03:03:46 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2026:19466 https://access.redhat.com/errata/RHSA-2026:19466
Comment 24 errata-xmlrpc 2026-05-20 03:05:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:19462 https://access.redhat.com/errata/RHSA-2026:19462
Comment 25 errata-xmlrpc 2026-05-20 07:32:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.6 Telecommunications Update Service

Via RHSA-2026:19542 https://access.redhat.com/errata/RHSA-2026:19542
Comment 26 errata-xmlrpc 2026-05-20 13:03:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:19655 https://access.redhat.com/errata/RHSA-2026:19655
Comment 27 errata-xmlrpc 2026-05-20 14:17:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:19704 https://access.redhat.com/errata/RHSA-2026:19704
Note You need to log in before you can comment on or make changes to this bug.