CVE-2023-43688: Buffer Overflow
Published Jun 9, 2026
·Updated
An issue was discovered in Malwarebytes 4.x and 5.x (and Nebula 2020-10-21 and later). There is a Heap buffer overflow in various buffer encryption utilities.
Affected Software
2 affected components
Malwarebytes Malwarebytes>=4.0<5.0, >=5.0<6.0
Malwarebytes Nebula>=2020-10-21
Event History
Jun 9, 2026
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·07:16 PM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What is the severity of CVE-2023-43688?
CVE-2023-43688 has a severity rating of high, with a CVSS score of 7.5.
2
What does CVE-2023-43688 affect?
CVE-2023-43688 affects Malwarebytes versions 4.x and 5.x, as well as Malwarebytes Nebula released on 2020-10-21 and later.
3
How do I fix CVE-2023-43688?
To mitigate CVE-2023-43688, ensure that you update to the latest version of Malwarebytes or Malwarebytes Nebula.
4
What type of vulnerability is CVE-2023-43688?
CVE-2023-43688 is categorized as a buffer overflow vulnerability.
5
What are the potential consequences of CVE-2023-43688?
Exploitation of CVE-2023-43688 could allow attackers to execute arbitrary code due to a heap buffer overflow.