Bug 2489218 (CVE-2026-12328) - CVE-2026-12328 firefox: thunderbird: Memory safety bugs fixed in Firefox ESR 115.37, Firefox ESR 140.12, Thunderbird ESR 140.12, Firefox 152 and Thunderbird 152
Summary: CVE-2026-12328 firefox: thunderbird: Memory safety bugs fixed in Firefox ESR ...
Keywords:
Status: NEW
Alias: CVE-2026-12328
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-16 14:01 UTC by OSIDB Bzimport
Modified: 2026-06-25 15:58 UTC (History)
5 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-2026:27717 0 None None None 2026-06-22 03:03:28 UTC
Red Hat Product Errata RHSA-2026:27733 0 None None None 2026-06-22 03:50:56 UTC
Red Hat Product Errata RHSA-2026:27734 0 None None None 2026-06-22 04:18:43 UTC
Red Hat Product Errata RHSA-2026:29940 0 None None None 2026-06-25 15:58:59 UTC

Description OSIDB Bzimport 2026-06-16 14:01:52 UTC 
Memory safety bugs present in Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird ESR 140.11, Firefox 151 and Thunderbird 151. 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 152, Firefox ESR 140.12, and Firefox ESR 115.37.
Comment 1 errata-xmlrpc 2026-06-22 03:03:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:27717 https://access.redhat.com/errata/RHSA-2026:27717
Comment 2 errata-xmlrpc 2026-06-22 03:50:55 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:27733 https://access.redhat.com/errata/RHSA-2026:27733
Comment 3 errata-xmlrpc 2026-06-22 04:18:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:27734 https://access.redhat.com/errata/RHSA-2026:27734
Comment 4 errata-xmlrpc 2026-06-25 15:58:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:29940 https://access.redhat.com/errata/RHSA-2026:29940
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