CVE•Published 2026-03-16•Modified 2026-06-08•1 article on news•7 live references•NVD data
CVE-2016-20030
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
13
Exploit Prediction Scoring System · top 87% of all CVEs
Description
ZKTeco ZKBioSecurity 3.0 contains a user enumeration vulnerability that allows unauthenticated attackers to discover valid usernames by submitting partial characters via the username parameter. Attackers can send requests to the authLoginAction!login.do script with varying username inputs to enumerate valid user accounts based on application responses.
Timeline
Published 2026-03-16
Modified 2026-06-08
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2016-20030Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2016-20030Censys host search filtered to this CVE id.
grep.app
CVE-2016-20030Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2016-20030GitHub code search for direct mentions.
Google dork
"CVE-2016-20030" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2016-20030 on GitHub.