Firefox 159: Incorrect Boundary Conditions in Layout (Block & Inline)
CVE-2026-120572 Published on November 3, 2026

Incorrect boundary conditions in the Layout: Block and Inline component
Incorrect boundary conditions in the Layout: Block and Inline component. This vulnerability was fixed in Firefox 159.0.1.

NVD

Vulnerability Analysis

CVE-2026-120572 is exploitable 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 Type

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-2026-120572 has been classified to as a Buffer Overflow vulnerability or weakness.


Products Associated with CVE-2026-120572

Want to know whenever a new CVE is published for Mozilla Firefox? stack.watch will email you.

Mozilla Firefox
 

Affected Versions

Mozilla Firefox: