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Vulnerability record · CVE-2023-43688 · published 9 June 2026

CVE-2023-43688: Heap-based buffer overflow vulnerability

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.

7.5 CVSS 3.1 High EPSS 0.22% · top 89.1% CWE-122 · Heap-based buffer overflow Deferred
7.5CVSS 3.1 base score
0.22%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
23 Jul 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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

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Source: NIST National Vulnerability Database (record CVE-2023-43688), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.