Is CVE-2016-20026 actively exploited?

No active exploitation of CVE-2016-20026 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2016-20026 be exploited remotely?

Yes. CVE-2016-20026 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2016-20026?

CVE-2016-20026 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2016-20026

CWE-798Published: March 16, 2026· Updated: Mar 16, 2026

9.8

CVSS v3.1

EPSS:0.10%probability of exploitation in 30 daysPercentile:27.6th

Official 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.

NVD Source

Technical Analysis

CVE-2016-20026 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.