How severe is CVE-2024-13966?

CVE-2024-13966 has a CVSS 3.x base score of 7.3, rated high 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 low.

Is CVE-2024-13966 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-13966?

CVE-2024-13966 affects Zkteco Biotime. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-13966?

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-2024-13966 have an EU (EUVD) identifier?

Yes. CVE-2024-13966 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16361.

When was CVE-2024-13966 published?

CVE-2024-13966 was published on 2025-05-27 and last updated on 2026-06-17.

CVE-2024-13966

CVE-2024-13966 is a high-severity vulnerability in Zkteco Biotime with a CVSS 3.x base score of 7.3. 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-1393.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v4: 6.9
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-16361
Weakness: CWE-1393
Affected product: Zkteco Biotime
Published: 2025-05-27
Last modified: 2026-06-17

Description

ZKTeco BioTime allows unauthenticated attackers to enumerate usernames and log in as any user with a password unchanged from the default value '123456'. Users should change their passwords (located under the Attendance Settings tab as "Self-Password").

Frequently asked questions

What is CVE-2024-13966?: ZKTeco BioTime allows unauthenticated attackers to enumerate usernames and log in as any user with a password unchanged from the default value '123456'. Users should change their passwords (located under the Attendance Settings tab as "Self-Password").
How severe is CVE-2024-13966?: CVE-2024-13966 has a CVSS 3.x base score of 7.3, rated high 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 low.
Is CVE-2024-13966 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-13966?: CVE-2024-13966 affects Zkteco Biotime. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-13966?: 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-2024-13966 have an EU (EUVD) identifier?: Yes. CVE-2024-13966 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16361.
When was CVE-2024-13966 published?: CVE-2024-13966 was published on 2025-05-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:zkteco:biotime:*:*:*:*:*:*:*:*

More vulnerabilities in Zkteco Biotime

CVE-2023-38951 — Critical (CVSS 9.8): ZKTeco BioTime 8.5.5 through 9.x before 9.0.1 (20240617.19506) allows authenticated attackers to create or overwrite…
CVE-2023-51142 — High (CVSS 7.5): An issue in ZKTeco BioTime v.8.5.4 and before allows a remote attacker to obtain sensitive information.
CVE-2023-38952 — High (CVSS 7.5): Insecure access control in ZKTeco BioTime through 9.0.1 allows authenticated attackers to escalate their privileges due…
CVE-2023-38950 — High (CVSS 7.5): A path traversal vulnerability in the iclock API of ZKTeco BioTime v8.5.5 allows unauthenticated attackers to read…
CVE-2023-38949 — High (CVSS 7.5): An issue in a hidden API in ZKTeco BioTime v8.5.5 allows unauthenticated attackers to arbitrarily reset the…
CVE-2022-38803 — Medium (CVSS 6.8): Zkteco BioTime < 8.5.3 Build:20200816.447 is vulnerable to Incorrect Access Control via Leave, overtime, Manual log. An…

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