Denial of Service Vulnerability in Malwarebytes Software
CVE-2023-43686

6.2MEDIUM

Key Information:

Vendor

Malwarebytes

Status
Malwarebytes
Vendor
CVE Published:
9 June 2026

What is CVE-2023-43686?

A vulnerability has been identified in Malwarebytes versions 4.x and 5.x, as well as Nebula from 2020-10-21 onwards. The issue arises when an excessive number of Firefox preference files are processed, resulting in the parser neglecting critical browser configuration files. This can disrupt user workflows and lead to denial of service scenarios. It is crucial for users to stay informed and apply the necessary mitigations to safeguard their systems.

References

https://www.malwarebytes.com/secure/cves/cve-2023-43686

CVSS V3.1

Score:
6.2
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.