CVE-2026-120572
Received Received - Intake

Incorrect Boundary Handling in Firefox Layout Components

Publication date: 2026-11-03

Last updated on: 2026-11-03

Assigner: Mozilla Corporation

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

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-11-03
Last Modified
2026-11-03
Generated
2026-11-03
AI Q&A
2026-11-03
EPSS Evaluated
N/A
NVD
CVE-2026-120572
EUVD
EUVD-2026-115825

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox 159.0.1

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability involves incorrect boundary conditions in Firefox's Layout: Block and Inline component. It was fixed in Firefox version 159.0.1.

Detection Guidance

To detect this vulnerability, check the installed version of Firefox on your system. Compare it against Firefox 159.0.1. If your version is older, the system is vulnerable. Use commands like 'firefox --version' on Linux/macOS or check 'Help > About Firefox' on Windows.

Impact Analysis

The vulnerability could potentially lead to security risks such as memory corruption or unexpected behavior in rendering web content. Users should update to Firefox 159.0.1 or later to mitigate this issue.

Mitigation Strategies

Immediately update Firefox to version 159.0.1 or later. Disable automatic updates temporarily if needed, but prioritize installing the patch to close the security gap.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-120572. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart

Security Radar

News mentioning this vulnerability
Loading related security news...