CVE-2016-20025
CVE-2016-20025 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-552.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v4: 8.7
- EPSS exploit prediction: 0% (36th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2016-10805
- Weakness: CWE-552
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is 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. Attackers can leverage the Modify permission granted to the Authenticated Users group to replace executable binaries with malicious code for privilege escalation.
- How severe is CVE-2016-20025?
- CVE-2016-20025 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2016-20025 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2016-20025?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2016-20025 have an EU (EUVD) identifier?
- Yes. CVE-2016-20025 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2016-10805.
- When was CVE-2016-20025 published?
- CVE-2016-20025 was published on 2026-03-16 and last updated on 2026-06-17.
References
- https://cxsecurity.com/issue/WLB-2016080265
- https://exchange.xforce.ibmcloud.com/vulnerabilities/116486
- https://packetstormsecurity.com/files/138566
- https://www.exploit-db.com/exploits/40323/
- https://www.vulncheck.com/advisories/zkteco-zkaccess-professional-privilege-escalation-via-insecure-permissions
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5361.php
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