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CVE-2016-20026

CRITICAL Exploitation: PoC
9.8
CVSS 3.1
Description
ZKTeco ZKBioSecurity 3.0 contains hardcoded credentials in the bundled Apache Tomcat server that allow unauthenticated attackers to access the manager application. Attackers can authenticate with hardcoded credentials stored in tomcat-users.xml to upload malicious WAR archives containing JSP applications and execute arbitrary code with SYSTEM privileges.

Metadata

CVE ID
CVE-2016-20026
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-03-15 12:36 UTC
Published
2026-03-15 13:35 UTC
Last updated
2026-07-28 01:46 UTC
Primary CWE
CWE-798
Use of Hard-coded Credentials
Vendor / Product
ZKTeco Inc. / ZKTeco ZKBioSecurity
Sources
cve.org  ·  NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
yes
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
ZKTeco Inc. ZKTeco ZKBioSecurity — 3.0.1.0_R_230
Weakness (CWE)
CWESourceDescription
CWE-798 cna Use of Hard-coded Credentials
CVSS scores (2)
ScoreSeverityVersionSourceVector
9.8 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 CRITICAL 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References (6)
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