CVE-2026-2792: Vulnerability in Mozilla Firefox
Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
AI Analysis
Technical Summary
This vulnerability involves several memory safety bugs in specific versions of Firefox and Thunderbird, including evidence of memory corruption that could be exploited to execute arbitrary code. The issues affect Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147, and Thunderbird 147. Mozilla released fixes in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird ESR 140.8. The CVSS score is 9.8, indicating critical severity with network attack vector, no privileges required, and no user interaction needed. The vendor advisory lists numerous related bugs and confirms the fixes in the stated versions.
Potential Impact
Successful exploitation of these memory safety bugs could lead to arbitrary code execution, potentially allowing attackers to fully compromise affected systems. The critical CVSS score (9.8) reflects high confidentiality, integrity, and availability impacts. However, there are no known exploits in the wild currently reported.
Mitigation Recommendations
Mozilla has released official fixes for these vulnerabilities in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird ESR 140.8. Users and administrators should update to these versions or later to remediate the vulnerabilities. Since this is not a cloud service, patching the client software is required. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-2792: Vulnerability in Mozilla Firefox
Description
Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves several memory safety bugs in specific versions of Firefox and Thunderbird, including evidence of memory corruption that could be exploited to execute arbitrary code. The issues affect Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147, and Thunderbird 147. Mozilla released fixes in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird ESR 140.8. The CVSS score is 9.8, indicating critical severity with network attack vector, no privileges required, and no user interaction needed. The vendor advisory lists numerous related bugs and confirms the fixes in the stated versions.
Potential Impact
Successful exploitation of these memory safety bugs could lead to arbitrary code execution, potentially allowing attackers to fully compromise affected systems. The critical CVSS score (9.8) reflects high confidentiality, integrity, and availability impacts. However, there are no known exploits in the wild currently reported.
Mitigation Recommendations
Mozilla has released official fixes for these vulnerabilities in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird ESR 140.8. Users and administrators should update to these versions or later to remediate the vulnerabilities. Since this is not a cloud service, patching the client software is required. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-02-19T15:06:37.841Z
- Cvss Version
- null
- State
- PUBLISHED
Threat ID: 699daf70be58cf853bdde234
Added to database: 2/24/2026, 2:02:24 PM
Last enriched: 4/14/2026, 12:05:25 PM
Last updated: 5/25/2026, 10:17:12 PM
Views: 205
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