CVE-2026-7322

Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.
References
Link Resource
https://bugzilla.mozilla.org/buglist.cgi?bug_id=2021904%2C2022731%2C2027158%2C2027733%2C2027973%2C2027976%2C2028231%2C2028731%2C2028886%2C2029067%2C2029700%2C2029724%2C2029806%2C2029814%2C2030108%2C2030111%2C2031524%2C2031921%2C2032040 Broken Link
https://www.mozilla.org/security/advisories/mfsa2026-35/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-36/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-37/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-38/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-39/ Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:19153
https://access.redhat.com/errata/RHSA-2026:19157
https://access.redhat.com/errata/RHSA-2026:19348
https://access.redhat.com/errata/RHSA-2026:19370
https://access.redhat.com/errata/RHSA-2026:19588
https://access.redhat.com/errata/RHSA-2026:20586
https://access.redhat.com/errata/RHSA-2026:21743
https://access.redhat.com/errata/RHSA-2026:22324
https://access.redhat.com/errata/RHSA-2026:22408
https://access.redhat.com/errata/RHSA-2026:22409
https://access.redhat.com/errata/RHSA-2026:22410
https://access.redhat.com/errata/RHSA-2026:22708
https://access.redhat.com/errata/RHSA-2026:22712
https://access.redhat.com/errata/RHSA-2026:22847
https://access.redhat.com/errata/RHSA-2026:24345
https://access.redhat.com/errata/RHSA-2026:24717
https://access.redhat.com/errata/RHSA-2026:24718
https://access.redhat.com/errata/RHSA-2026:24719
https://access.redhat.com/errata/RHSA-2026:24721
https://access.redhat.com/errata/RHSA-2026:24844
https://access.redhat.com/errata/RHSA-2026:24846
https://access.redhat.com/errata/RHSA-2026:25014
https://access.redhat.com/security/cve/CVE-2026-7322
https://bugzilla.redhat.com/show_bug.cgi?id=2463484
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7322.json
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*

History

30 Jun 2026, 03:21

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:19153 -
  • () https://access.redhat.com/errata/RHSA-2026:19157 -
  • () https://access.redhat.com/errata/RHSA-2026:19348 -
  • () https://access.redhat.com/errata/RHSA-2026:19370 -
  • () https://access.redhat.com/errata/RHSA-2026:19588 -
  • () https://access.redhat.com/errata/RHSA-2026:20586 -
  • () https://access.redhat.com/errata/RHSA-2026:21743 -
  • () https://access.redhat.com/errata/RHSA-2026:22324 -
  • () https://access.redhat.com/errata/RHSA-2026:22408 -
  • () https://access.redhat.com/errata/RHSA-2026:22409 -
  • () https://access.redhat.com/errata/RHSA-2026:22410 -
  • () https://access.redhat.com/errata/RHSA-2026:22708 -
  • () https://access.redhat.com/errata/RHSA-2026:22712 -
  • () https://access.redhat.com/errata/RHSA-2026:22847 -
  • () https://access.redhat.com/errata/RHSA-2026:24345 -
  • () https://access.redhat.com/errata/RHSA-2026:24717 -
  • () https://access.redhat.com/errata/RHSA-2026:24718 -
  • () https://access.redhat.com/errata/RHSA-2026:24719 -
  • () https://access.redhat.com/errata/RHSA-2026:24721 -
  • () https://access.redhat.com/errata/RHSA-2026:24844 -
  • () https://access.redhat.com/errata/RHSA-2026:24846 -
  • () https://access.redhat.com/errata/RHSA-2026:25014 -
  • () https://access.redhat.com/security/cve/CVE-2026-7322 -
  • () https://bugzilla.redhat.com/show_bug.cgi?id=2463484 -
  • () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7322.json -
CWE CWE-787

01 May 2026, 12:30

Type Values Removed Values Added
First Time Mozilla
Mozilla firefox
Mozilla thunderbird
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
References () https://bugzilla.mozilla.org/buglist.cgi?bug_id=2021904%2C2022731%2C2027158%2C2027733%2C2027973%2C2027976%2C2028231%2C2028731%2C2028886%2C2029067%2C2029700%2C2029724%2C2029806%2C2029814%2C2030108%2C2030111%2C2031524%2C2031921%2C2032040 - () https://bugzilla.mozilla.org/buglist.cgi?bug_id=2021904%2C2022731%2C2027158%2C2027733%2C2027973%2C2027976%2C2028231%2C2028731%2C2028886%2C2029067%2C2029700%2C2029724%2C2029806%2C2029814%2C2030108%2C2030111%2C2031524%2C2031921%2C2032040 - Broken Link
References () https://www.mozilla.org/security/advisories/mfsa2026-35/ - () https://www.mozilla.org/security/advisories/mfsa2026-35/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2026-36/ - () https://www.mozilla.org/security/advisories/mfsa2026-36/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2026-37/ - () https://www.mozilla.org/security/advisories/mfsa2026-37/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2026-38/ - () https://www.mozilla.org/security/advisories/mfsa2026-38/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2026-39/ - () https://www.mozilla.org/security/advisories/mfsa2026-39/ - Vendor Advisory

30 Apr 2026, 18:16

Type Values Removed Values Added
References
  • () https://www.mozilla.org/security/advisories/mfsa2026-38/ -
  • () https://www.mozilla.org/security/advisories/mfsa2026-39/ -
Summary (en) Memory safety bugs present in Firefox ESR 115.35.0, Firefox ESR 140.10.0 and Firefox 150.0.0. 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 150.0.1, Firefox ESR 140.10.1, and Firefox ESR 115.35.1. (en) Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. 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 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.

28 Apr 2026, 22:16

Type Values Removed Values Added
Summary (en) Memory safety bugs present in Firefox ESR 115.35.0, Firefox ESR 140.10.0, Thunderbird ESR 140.10.0, Firefox 150.0.0 and Thunderbird 150.0.0. 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 150.0.1, Firefox ESR 140.10.1, and Firefox ESR 115.35.1. (en) Memory safety bugs present in Firefox ESR 115.35.0, Firefox ESR 140.10.0 and Firefox 150.0.0. 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 150.0.1, Firefox ESR 140.10.1, and Firefox ESR 115.35.1.
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 7.3
CWE CWE-119
CWE-416

28 Apr 2026, 15:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-04-28 15:16

Updated : 2026-07-15 01:16


NVD link : CVE-2026-7322

Mitre link : CVE-2026-7322

CVE.ORG link : CVE-2026-7322


JSON object : View

Products Affected

mozilla

  • firefox
  • thunderbird
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-416

Use After Free

CWE-787

Out-of-bounds Write