# CVE-2024-13966

## Summary

- **CVE ID:** CVE-2024-13966
- **Severity:** MEDIUM
- **CVSS Score:** 7.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N)
- **CWE:** CWE-1393
- **Published:** May 27, 2025
- **Last Modified:** Mar 13, 2026

## 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").

## Affected Products

- ZKTeco — BioTime (*)

## References

- [CNA](https://krashconsulting.com/fury-of-fingers-biotime-rce/)
- [CNA](https://zkteco-store.ru/wp-content/uploads/2023/09/ZKBio-CVSecurity-6.0.0-User-Manual_EN-v1.0_20230616.pdf)
- [CNA](https://www.cve.org/CVERecord?id=CVE-2024-13966)
- [CNA](https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-148-01.json)
- [CVE](https://www.zkteco.com/en/Security_Bulletinsibs/18)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.39%
- **EPSS Percentile:** 31.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._