CVE-2026-7322: Vulnerability in Mozilla Firefox
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.
AI Analysis
Technical Summary
CVE-2026-7322 covers memory safety bugs found in Mozilla Firefox ESR 140.10.0, Firefox 150.0.0, and Thunderbird versions 140.10.0 and 150.0.0. These bugs include memory corruption issues that could be exploited to run arbitrary code. Mozilla has fixed these vulnerabilities in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1. The CVSS 3.1 base score is 7.3, indicating high severity, with attack vector network, low attack complexity, no privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. The vendor advisories confirm the fixes and recommend updating to the patched versions.
Potential Impact
The vulnerabilities allow potential arbitrary code execution due to memory corruption bugs. This can lead to confidentiality, integrity, and availability impacts on affected systems. The CVSS score of 7.3 reflects a high impact level. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
A fix is available. Users should update affected Mozilla Firefox and Thunderbird installations to the fixed versions: Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1. Applying these updates addresses the memory safety vulnerabilities. No additional mitigation steps are indicated by the vendor advisories.
CVE-2026-7322: Vulnerability in Mozilla Firefox
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.
CVSS v3.1
Score 7.3high
Affected software
pkg:github/mozilla/thunderbirdRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-7322 covers memory safety bugs found in Mozilla Firefox ESR 140.10.0, Firefox 150.0.0, and Thunderbird versions 140.10.0 and 150.0.0. These bugs include memory corruption issues that could be exploited to run arbitrary code. Mozilla has fixed these vulnerabilities in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1. The CVSS 3.1 base score is 7.3, indicating high severity, with attack vector network, low attack complexity, no privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. The vendor advisories confirm the fixes and recommend updating to the patched versions.
Potential Impact
The vulnerabilities allow potential arbitrary code execution due to memory corruption bugs. This can lead to confidentiality, integrity, and availability impacts on affected systems. The CVSS score of 7.3 reflects a high impact level. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
A fix is available. Users should update affected Mozilla Firefox and Thunderbird installations to the fixed versions: Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1. Applying these updates addresses the memory safety vulnerabilities. No additional mitigation steps are indicated by the vendor advisories.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-04-28T13:42:17.804Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-35/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-36/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-37/","vendor":"Mozilla"}]
Threat ID: 69f0c288cbff5d86101cc9f3
Added to database: 04/28/2026, 14:22:00 UTC
Last enriched: 07/15/2026, 09:39:56 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 387
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