ZKTeco BioTime Biometric Data Endpoint finger_data authorization

published 2026-10-12 28 d ago modified 2026-10-16 24 d ago also EUVD-2026-97167

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 12%
public exploits: 0; none known

A flaw has been found in ZKTeco BioTime 9.5.6 Build 20260130.3206. This affects an unknown part of the file /iclock/finger_data/ of the component Biometric Data Endpoint. Executing a manipulation of the argument emp_code can lead to authorization bypass. The attack can be launched remotely. Upgrading to version 9.5.6 Build 3623 is able to mitigate this issue. You should upgrade the affected component.

Patch / fix

fixed in 1 links 1

ZKTeco BioTime 9.5.6 Build 3623

zkteco.com/en/Security_Bulletinsibs/27 patch

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 25 d ago (2026-10-15)

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C
CNA	3.0	4.3	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C
CNA	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N/E:ND/RL:OF/RC:C
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CNA	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected products

ZKTeco BioTime

Classification

Weakness

CWE-639 Authorization Bypass Through User-Controlled Key
CWE-285 Improper Authorization

References

zkteco.com /en/Security_Bulletinsibs/27
patch
vuldb.com /vuln/416573
vdb-entry, technical-description
vuldb.com /vuln/416573/cti
signature, permissions-required
vuldb.com /cve/CVE-2026-108796
third-party-advisory
vuldb.com /submit/961689
third-party-advisory

Sources

CVE List CVE-2026-108796
NVD CVE-2026-108796

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.

Summary