Heap Buffer Overflow in Malwarebytes Products
CVE-2023-43688

7.5HIGH

Key Information:

Vendor

Malwarebytes

Status
Malwarebytes
Vendor
CVE Published:
9 June 2026

What is CVE-2023-43688?

A vulnerability exists in Malwarebytes versions 4.x and 5.x, as well as Nebula from version 2020-10-21 onward, which is characterized by a heap buffer overflow in various buffer encryption utilities. This flaw could potentially allow an attacker to execute arbitrary code, leading to unauthorized access or system compromise.

References

https://www.malwarebytes.com/secure/cves/cve-2023-43688

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.