CVE-2026-3847: Vulnerability in Mozilla Firefox
Memory safety bugs present in Firefox 148.0.2. 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 148.0.2.
AI Analysis
Technical Summary
This vulnerability consists of memory safety bugs in Firefox that showed evidence of memory corruption, categorized under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-416 (Use After Free). These bugs were present prior to Firefox 148.0.2 and could have been exploited to run arbitrary code with user interaction. Mozilla fixed these issues in Firefox 148.0.2 as documented in their security advisory MFSA2026-19.
Potential Impact
The vulnerability has a CVSS score of 8.8 (high severity) with impacts to confidentiality, integrity, and availability (all high). Exploitation could lead to arbitrary code execution, compromising the affected system. However, no known exploits have been reported in the wild.
Mitigation Recommendations
A fix is available and has been officially released by Mozilla in Firefox version 148.0.2. Users and administrators should update to Firefox 148.0.2 or later to remediate this vulnerability. No additional mitigation steps are required beyond applying the official update.
CVE-2026-3847: Vulnerability in Mozilla Firefox
Description
Memory safety bugs present in Firefox 148.0.2. 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 148.0.2.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability consists of memory safety bugs in Firefox that showed evidence of memory corruption, categorized under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-416 (Use After Free). These bugs were present prior to Firefox 148.0.2 and could have been exploited to run arbitrary code with user interaction. Mozilla fixed these issues in Firefox 148.0.2 as documented in their security advisory MFSA2026-19.
Potential Impact
The vulnerability has a CVSS score of 8.8 (high severity) with impacts to confidentiality, integrity, and availability (all high). Exploitation could lead to arbitrary code execution, compromising the affected system. However, no known exploits have been reported in the wild.
Mitigation Recommendations
A fix is available and has been officially released by Mozilla in Firefox version 148.0.2. Users and administrators should update to Firefox 148.0.2 or later to remediate this vulnerability. No additional mitigation steps are required beyond applying the official update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-03-09T19:33:24.537Z
- Cvss Version
- null
- State
- PUBLISHED
Threat ID: 69b03689ea502d3aa867a112
Added to database: 3/10/2026, 3:19:37 PM
Last enriched: 4/14/2026, 12:07:58 PM
Last updated: 4/24/2026, 4:17:35 PM
Views: 317
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