CVE-2026-7322 Details
Description
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.
A critical memory safety vulnerability has been identified in multiple versions of Mozilla Firefox and Thunderbird. This issue is 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 memory safety bugs showed signs of memory corruption, and it is presumed that, with enough effort, they could have been exploited to execute arbitrary code.
Users can upgrade to Firefox 150.0.1, Firefox ESR 140.10.1, Thunderbird ESR 140.10.1, or Firefox ESR 115.35.1 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 30, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | CISA-ADP |
| CWE-416 | Use After Free | CISA-ADP |
| CWE-787 | Out-of-bounds Write | redhat-SADP |
Affected Products
| Product | Versions |
|---|---|
| mozilla firefox | < 115.35.1 < 150.0.1 >= 128.0, < 140.10.1 |
CPE
Remediation
| |
| mozilla thunderbird | < 140.10.1 < 150.0.1 |
CPE
Remediation
| |
Change History
9 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 15, 2026 | CVE Modified | redhat-SADP |
| Jun 30, 2026 | CVE Modified | redhat-SADP |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| May 1, 2026 | Initial Analysis | [email protected] |
| Apr 30, 2026 | CVE Modified | [email protected] |
| Apr 28, 2026 | CVE Modified | CISA-ADP |
| Apr 28, 2026 | CVE Modified | [email protected] |
| Apr 28, 2026 | New CVE Received | [email protected] |