How severe is CVE-2023-43687?

CVE-2023-43687 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-43687 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-43687?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-43687 have an EU (EUVD) identifier?

Yes. CVE-2023-43687 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-48068.

When was CVE-2023-43687 published?

CVE-2023-43687 was published on 2025-08-14 and last updated on 2026-06-17.

CVE-2023-43687

CVE-2023-43687 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-421.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-48068
Weakness: CWE-421
Published: 2025-08-14
Last modified: 2026-06-17

Description

An issue was discovered in Malwarebytes before 4.6.14.326 and before 5.1.5.116 (and Nebula 2020-10-21 and later). There is a Race condition that leads to code execution because of a lack of locks between file verification and execution.

Frequently asked questions

What is CVE-2023-43687?: An issue was discovered in Malwarebytes before 4.6.14.326 and before 5.1.5.116 (and Nebula 2020-10-21 and later). There is a Race condition that leads to code execution because of a lack of locks between file verification and execution.
How severe is CVE-2023-43687?: CVE-2023-43687 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-43687 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-43687?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-43687 have an EU (EUVD) identifier?: Yes. CVE-2023-43687 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-48068.
When was CVE-2023-43687 published?: CVE-2023-43687 was published on 2025-08-14 and last updated on 2026-06-17.

References

https://www.malwarebytes.com/secure/cves/cve-2023-43687

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