CVE-2026-3847: Memory safety bugs fixed in Firefox 148.0.2
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.
Affected Software
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is the severity of CVE-2026-3847?
CVE-2026-3847 has a high severity rating due to the potential for memory corruption that could be exploited to execute arbitrary code.
How do I fix CVE-2026-3847?
To fix CVE-2026-3847, update your Mozilla Firefox to version 148.0.3 or later.
Which versions of Firefox are affected by CVE-2026-3847?
CVE-2026-3847 affects Mozilla Firefox versions up to and including 148.0.2.
What are memory safety bugs in relation to CVE-2026-3847?
Memory safety bugs, as seen in CVE-2026-3847, are vulnerabilities that can lead to memory corruption, potentially allowing attackers to run harmful code.
Is it safe to use Firefox version 148.0.2 after CVE-2026-3847?
Using Firefox version 148.0.2 is not safe due to the presence of memory safety bugs identified in CVE-2026-3847.