CVE-2026-7323: 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, Thunderbird 150.0.1, and Thunderbird 140.10.1.
AI Analysis
Technical Summary
This vulnerability consists of memory safety bugs in Mozilla Firefox ESR 140.10.0, Firefox 150.0.0, and Thunderbird ESR 140.10.0 and 150.0.0. These bugs showed evidence of memory corruption and could potentially be exploited to run arbitrary code with sufficient effort. The issues are classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-787 (Out-of-bounds Write). Mozilla addressed these vulnerabilities in Firefox 150.0.1, Firefox ESR 140.10.1, Thunderbird 150.0.1, and Thunderbird 140.10.1. The CVSS v3.1 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.
Potential Impact
Successful exploitation of these memory safety bugs could allow an attacker to execute arbitrary code on affected systems, potentially compromising confidentiality, integrity, and availability of the affected applications. However, there are no known exploits in the wild currently reported. The impact is rated high based on the CVSS score and the nature of memory corruption vulnerabilities.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 150.0.1, Firefox ESR 140.10.1, Thunderbird 150.0.1, and Thunderbird 140.10.1. Users and administrators should update affected products to these versions or later to remediate the issue. Patch status is confirmed by the vendor advisories. No additional mitigation steps are indicated beyond applying these updates.
CVE-2026-7323: 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, Thunderbird 150.0.1, and Thunderbird 140.10.1.
CVSS v3.1
Score 7.3high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability consists of memory safety bugs in Mozilla Firefox ESR 140.10.0, Firefox 150.0.0, and Thunderbird ESR 140.10.0 and 150.0.0. These bugs showed evidence of memory corruption and could potentially be exploited to run arbitrary code with sufficient effort. The issues are classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-787 (Out-of-bounds Write). Mozilla addressed these vulnerabilities in Firefox 150.0.1, Firefox ESR 140.10.1, Thunderbird 150.0.1, and Thunderbird 140.10.1. The CVSS v3.1 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.
Potential Impact
Successful exploitation of these memory safety bugs could allow an attacker to execute arbitrary code on affected systems, potentially compromising confidentiality, integrity, and availability of the affected applications. However, there are no known exploits in the wild currently reported. The impact is rated high based on the CVSS score and the nature of memory corruption vulnerabilities.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 150.0.1, Firefox ESR 140.10.1, Thunderbird 150.0.1, and Thunderbird 140.10.1. Users and administrators should update affected products to these versions or later to remediate the issue. Patch status is confirmed by the vendor advisories. No additional mitigation steps are indicated beyond applying these updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-04-28T13:42:18.353Z
- 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"}]
Threat ID: 69f0c288cbff5d86101cc9f9
Added to database: 4/28/2026, 2:22:00 PM
Last enriched: 5/13/2026, 3:37:12 AM
Last updated: 6/12/2026, 12:25:08 PM
Views: 95
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