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.
Published: 2026-06-09
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 10 Jun 2026 02:15:00 +0000

Type Values Removed Values Added
First Time appeared Malwarebytes
Malwarebytes malwarebytes
Vendors & Products Malwarebytes
Malwarebytes malwarebytes

Wed, 10 Jun 2026 00:45:00 +0000

Type Values Removed Values Added
Title Heap Buffer Overflow in Malwarebytes Encryption Utilities

Tue, 09 Jun 2026 23:30:00 +0000

Type Values Removed Values Added
Title Heap Buffer Overflow in Malwarebytes Encryption Utilities
Weaknesses CWE-119
CWE-120

Tue, 09 Jun 2026 21:15:00 +0000

Type Values Removed Values Added
Title Heap Buffer Overflow in Malwarebytes Encryption Utilities
Weaknesses CWE-119
CWE-120

Tue, 09 Jun 2026 20:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-122
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 09 Jun 2026 18:45:00 +0000

Type Values Removed Values Added
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.
References

Subscriptions

Malwarebytes Malwarebytes
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-06-09T19:30:20.198Z

Reserved: 2023-09-21T00:00:00.000Z

Link: CVE-2023-43688

cve-icon Vulnrichment

Updated: 2026-06-09T19:30:04.857Z

cve-icon NVD

Status : Deferred

Published: 2026-06-09T19:16:42.060

Modified: 2026-06-09T21:17:01.950

Link: CVE-2023-43688

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-10T02:00:12Z

Weaknesses