How severe is CVE-2023-3940?

CVE-2023-3940 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-3940 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2023-3940?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2023-3940 have an EU (EUVD) identifier?

Yes. CVE-2023-3940 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-44566.

When was CVE-2023-3940 published?

CVE-2023-3940 was published on 2024-05-21 and last updated on 2026-06-17.

CVE-2023-3940

CVE-2023-3940 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. 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-23.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-44566
Weakness: CWE-23
Published: 2024-05-21
Last modified: 2026-06-17

Description

Relative Path Traversal vulnerability in ZkTeco-based OEM devices allows an attacker to access any file on the system. This issue affects ZkTeco-based OEM devices (ZkTeco ProFace X, Smartec ST-FR043, Smartec ST-FR041ME and possibly others) with the ZAM170-NF-1.8.25-7354-Ver1.0.0 and possibly others.

Frequently asked questions

What is CVE-2023-3940?: Relative Path Traversal vulnerability in ZkTeco-based OEM devices allows an attacker to access any file on the system. This issue affects ZkTeco-based OEM devices (ZkTeco ProFace X, Smartec ST-FR043, Smartec ST-FR041ME and possibly others) with the ZAM170-NF-1.8.25-7354-Ver1.0.0 and possibly others.
How severe is CVE-2023-3940?: CVE-2023-3940 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-3940 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2023-3940?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2023-3940 have an EU (EUVD) identifier?: Yes. CVE-2023-3940 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-44566.
When was CVE-2023-3940 published?: CVE-2023-3940 was published on 2024-05-21 and last updated on 2026-06-17.

References

https://github.com/klsecservices/Advisories/blob/master/K-ZkTeco-2023-003.md

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