Memory safety bugs in Firefox <148.0.2
CVE-2026-3847 Published on March 10, 2026

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. This vulnerability affects Firefox < 148.0.2.

NVD

Vulnerability Analysis

CVE-2026-3847 can be exploited with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
REQUIRED
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Types

What is a Buffer Overflow Vulnerability?

The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.

CVE-2026-3847 has been classified to as a Buffer Overflow vulnerability or weakness.

What is a Dangling pointer Vulnerability?

Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

CVE-2026-3847 has been classified to as a Dangling pointer vulnerability or weakness.


Products Associated with CVE-2026-3847

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Mozilla Firefox
 

Affected Versions

Mozilla Firefox: