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Fencer Vulns
medium 4.6

CVE-2023-3938 json

Bypassing ZkTeco-based OEM devices/ZKTeco biometric authentication system via SQLi in QR code

published 2024-05-21 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-44564

cvss
4.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

Summary

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in ZkTeco-based OEM devices allows an attacker to authenticate under any user from the device database.

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.

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

  • ZkTeco ZkTeco-based OEM devices with firmware ZAM170-NF-1.8.25-7354-Ver1.0.0
  • zkteco smartec_st_fr043
  • zkteco smartec_st_fr041me
  • zkteco facedepot_7b

Classification

Weakness
  • CWE-89 Improper Neutralization of Special Elements used in an SQL Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.