Security readout for executives and security teams
Plain-English summary
ZKTeco ZKBioSecurity 3.0 has a CSRF flaw that can let an attacker cause a logged-in administrator to create a superadmin account. The main business risk is unauthorized control of a biometric/security management platform if administrators use the product and are tricked into visiting hostile content.
Executive priority
Prioritize review if ZKBioSecurity manages physical access, biometrics, or attendance security in your environment. Treat as a targeted-access risk rather than a broad internet worm risk. If the affected version is present, reduce admin exposure and validate accounts promptly.
Technical view
CVE-2016-20028 is a CWE-352 cross-site request forgery issue in ZKTeco ZKBioSecurity 3.0.1.0_R_230. Public advisories state crafted requests can add superadmin users without proper validity checks when an authenticated user is induced to interact with attacker-controlled content. CVSS v4.0 is 5.3.
Likely exposure
Exposure is likely limited to organizations running ZKTeco ZKBioSecurity 3.0.1.0_R_230, especially where administrative sessions are reachable from user browsers. Internet exposure of the application would increase risk, but the supplied sources do not confirm exposed population or affected versions beyond the listed release.
Exploitation context
Public exploit references exist in Packet Storm and Exploit-DB, but the source bundle does not show CISA KEV listing or confirmed active exploitation. Successful abuse depends on an authenticated privileged user context and social engineering or browser interaction consistent with CSRF.
Researcher notes
The record is source-supported for ZKBioSecurity 3.0.1.0_R_230 and CWE-352. Multiple public exploit/advisory references exist, but the supplied sources do not name a vendor patch, broader version range, or active exploitation. Avoid assuming all ZKBioSecurity versions are affected.
Mitigation direction
- Check ZKTeco guidance for fixed versions or official workarounds.
- Restrict ZKBioSecurity admin access to trusted networks or VPN.
- Limit administrator browsing from active ZKBioSecurity sessions.
- Review and remove unnecessary or unknown superadmin accounts.
- Enforce least privilege for ZKBioSecurity administrative users.
- Monitor for unexpected account creation or privilege changes.
Validation and detection
- Inventory ZKBioSecurity deployments and confirm exact version.
- Identify whether version 3.0.1.0_R_230 is present.
- Review administrative account lists for unauthorized superadmins.
- Check audit logs for unexpected user creation events.
- Verify whether anti-CSRF protections are present in administrative workflows.
- Confirm remediation status against vendor or trusted advisory guidance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-352: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2016-20028 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
5.3MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L
Source materials
- CVE List V5 sourceCVE List V5
- Zero Science Lab DisclosureCVE reference · third-party-advisory
- CXSecurityCVE reference · third-party-advisory
- IBM X-Force ExchangeCVE reference · vdb-entry
- Packet Storm SecurityCVE reference · exploit
- ReferenceCVE reference · exploit
- VulnCheck Advisory: ZKTeco ZKBioSecurity 3.0 Cross-Site Request Forgery SuperadminCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.