CVE-2023-43686

June 9, 2026, 8:16 p.m.

6.2
Medium

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.

Product(s) Impacted

Vendor Product Versions
Malwarebytes
  • Malwarebytes
  • Nebula
  • 4.*, 5.*
  • 2020-10-21

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-755
Improper Handling of Exceptional Conditions
The product does not handle or incorrectly handles an exceptional condition.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a malwarebytes malwarebytes 4.* / / / / / / /
a malwarebytes malwarebytes 5.* / / / / / / /
a malwarebytes nebula 2020-10-21 / / / / / / /

References

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

Tags

[email protected]
CWE-755
2026-06-09
CVE-2023-43686

CVSS Score

6.2 / 10

CVSS Data - 3.1

  • Attack Vector: LOCAL
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • Scope: UNCHANGED
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: HIGH

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

    View Vector String

Timeline

Published: June 9, 2026, 7:16 p.m.
Last Modified: June 9, 2026, 8:16 p.m.

Status : Deferred

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.