Insecure File Permissions Vulnerability in ZKTeco ZKAccess Professional by ZKTeco
CVE-2016-20025
Key Information:
- Vendor
Zkteco Inc.
- Vendor
- CVE Published:
- 15 March 2026
Badges
What is CVE-2016-20025?
The ZKTeco ZKAccess Professional 3.5.3 suffers from a vulnerability that exposes it to privilege escalation due to insecure file permissions. Authenticated users can exploit the Modify permission associated with the Authenticated Users group to alter executable files. Through this manipulation, attackers may replace legitimate binaries with malicious code, thereby escalating their privileges within the affected system. This vulnerability necessitates immediate attention to restrict permissions and safeguard the integrity of executable files within the application.
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Affected Version(s)
ZKTeco ZKAccess Professional 3.5.3 (Build 0005)
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
CVSS V4
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved