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CVE-2016-20025

28
FAUCET Score

CVE-2016-20025 identifies an insecure file permissions vulnerability within ZKTeco ZKAccess Professional 3.5.3, enabling authenticated users to escalate privileges by modifying executable files. This high-severity vulnerability (CVSS 8.8) allows attackers with low privileges to remotely replace legitimate executable binaries with malicious code, resulting in high impact on confidentiality, integrity, and availability. Despite its critical nature, there is currently no evidence of active exploitation, public exploit code availability, or significant community discussion or media coverage surrounding this flaw.

Impacted Technologies

VendorProductVersion(s)CPE
ZKTeco Inc.ZKTeco ZKAccess Professional
3.5.3 (Build 0005)CNA affected

CVSS Data

CVSS version used by this source: 4.0

8.7HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
36.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 24th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cxsecurity.com / issue/WLB-2016080265
exchange.xforce.ibmcloud.com / vulnerabilities/116486
packetstormsecurity.com / files/138566
exploit-db.com / exploits/40323
vulncheck.com / advisories/zkteco-zkaccess-professional-privilege-escalation-via-insecure-permissions
zeroscience.mk / en/vulnerabilities/ZSL-2016-5361.php