CVE-2025-1938: Vulnerability in Mozilla Firefox
Memory safety bugs present in Firefox 135, Thunderbird 135, Firefox ESR 128.7, and Thunderbird 128.7. 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 136, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.
AI Analysis
Technical Summary
This vulnerability consists of memory safety bugs in specific versions of Mozilla Firefox and Thunderbird that showed evidence of memory corruption. With sufficient effort, these bugs could have been exploited to run arbitrary code. The affected versions are Firefox 135, Thunderbird 135, Firefox ESR 128.7, and Thunderbird 128.7. Mozilla released patches in Firefox 136, Thunderbird 136, Firefox ESR 128.8, and Thunderbird 128.8 to address these issues. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, no user interaction, unchanged scope, and impacts confidentiality and integrity but not availability.
Potential Impact
Successful exploitation could lead to arbitrary code execution due to memory corruption vulnerabilities. This could compromise the confidentiality and integrity of the affected systems. However, there are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Mozilla has released official patches fixing these memory safety bugs in Firefox 136, Thunderbird 136, Firefox ESR 128.8, and Thunderbird 128.8. Users and administrators should update to these fixed versions or later to mitigate the vulnerability. Since the vulnerability is patched, no additional mitigation steps are required beyond applying the official update.
CVE-2025-1938: Vulnerability in Mozilla Firefox
Description
Memory safety bugs present in Firefox 135, Thunderbird 135, Firefox ESR 128.7, and Thunderbird 128.7. 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 136, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability consists of memory safety bugs in specific versions of Mozilla Firefox and Thunderbird that showed evidence of memory corruption. With sufficient effort, these bugs could have been exploited to run arbitrary code. The affected versions are Firefox 135, Thunderbird 135, Firefox ESR 128.7, and Thunderbird 128.7. Mozilla released patches in Firefox 136, Thunderbird 136, Firefox ESR 128.8, and Thunderbird 128.8 to address these issues. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, no user interaction, unchanged scope, and impacts confidentiality and integrity but not availability.
Potential Impact
Successful exploitation could lead to arbitrary code execution due to memory corruption vulnerabilities. This could compromise the confidentiality and integrity of the affected systems. However, there are no reports of active exploitation in the wild at this time.
Mitigation Recommendations
Mozilla has released official patches fixing these memory safety bugs in Firefox 136, Thunderbird 136, Firefox ESR 128.8, and Thunderbird 128.8. Users and administrators should update to these fixed versions or later to mitigate the vulnerability. Since the vulnerability is patched, no additional mitigation steps are required beyond applying the official update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2025-03-04T12:29:43.643Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69091a4ac28fd46ded81d081
Added to database: 11/3/2025, 9:10:34 PM
Last enriched: 4/14/2026, 11:43:38 AM
Last updated: 5/9/2026, 10:29:28 PM
Views: 146
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