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Vulnerabilities

Vulnerability · CVE-2016-20025

ZKTeco ZKAccess Professional 3.5.3 contains an insecure file permissions vulnerability that allows authenticated users to escalate privileges by modifying executable files.

Published Mar 16, 2026 · catalog updated Jun 17, 2026 · ZKTeco ZKAccess Professional 3.5.3

Check if you run it

No confirmed exploitation is on record for CVE-2016-20025. EPSS is 0.45%. Act only if a listed version of ZKTeco ZKAccess Professional 3.5.3 is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (ZKTeco ZKAccess Professional 3.5.3).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.45%
Remediation
Advisory link
Affected products
See sources for product scope

ZKTeco ZKAccess Professional 3.5.3 contains an insecure file permissions vulnerability that allows authenticated users to escalate privileges by modifying executable files. Attackers can leverage the Modify permission granted to the Authenticated Users group to replace executable binaries with malicious code for privilege escalation.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2016-20025

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2016-20025. EPSS is 0.45%. Act only if a listed version of ZKTeco ZKAccess Professional 3.5.3 is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-552: Files or Directories Accessible to External Parties. EPSS 0.45%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 16, 2026 · NIST NVD

    Detected

    ZKTeco ZKAccess Professional 3.5.3 contains an insecure file permissions vulnerability that allows authenticated users to escalate privileges by modifying executable files. Attackers can leverage the Modify permission granted to the Authenticated Users group to replace executable binaries with malicious code for privilege escalation.

  2. Jun 17, 2026 · NIST NVD

    Updated

    ZKTeco ZKAccess Professional 3.5.3 contains an insecure file permissions vulnerability that allows authenticated users to escalate privileges by modifying executable files. Attackers can leverage the Modify permission granted to the Authenticated Users group to replace executable binaries with malicious code for privilege escalation.

Sources

  • CVE.orgVulnerability recordCVE-2016-20025

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2016-20025

    30-day exploitation probability 0.5%

    first.org
  • NIST NVDVulnerability recordCVE-2016-20025

    ZKTeco ZKAccess Professional 3.5.3 contains an insecure file permissions vulnerability that allows authenticated users to escalate privileges by modifying executable files. Attackers can leverage the Modify permission granted to the Authenticated Users group to replace executable

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttps://packetstormsecurity.com/files/138566

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.