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CVE-2023-43686

MEDIUM
6.2
CVSS Score
Published: June 9, 2026 at 12:00 AM UTC
Updated: July 23, 2026 at 07:32 PM UTC
2 products affected across 1 vendorMalwarebytesMalwarebytes Nebula

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Severity
MEDIUM6.2
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

An issue was discovered in Malwarebytes 4.x and 5.x (and Nebula 2020-10-21 and later). A large number of Firefox preference files can cause the parser to ignore other browser configuration files, leading to a denial of service.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Malwarebytes· Malwarebytes
90%
4 ≤ v < 55 ≤ v < 6
Malwarebytes Nebula· Malwarebytes
90%
v ≥ 2020-10-21

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.2MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-755

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