What is CVE-2021-35961?

CVE-2021-35961 is a critical-severity vulnerability in Secom Dr.id Access Control, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2021-07-16.

How severe is CVE-2021-35961?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Secom Dr.id Access Control

CVE-2021-35961

Dr. ID Door Access Control and Personnel Attendance Management system uses the hard-code admin default credentials that allows remote attackers to access the system through the default password and obtain the highest permission.

Published 2021-07-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.022 (81.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

Secom Dr.id Access Control
Taiwan Secom Co., Ltd., Door Access Control And Personnel Attendance Management System — versions unspecified

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

www.twcert.org.tw/tw/cp-132-4905-c99ac-1.html (Third Party Advisory)
www.chtsecurity.com/news/2e4e69d5-2e32-4f73-ac7e-a66432e020e4 (Third Party Advisory)

Frequently asked questions

What is CVE-2021-35961?: CVE-2021-35961 is a critical-severity vulnerability in Secom Dr.id Access Control, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2021-07-16.
How severe is CVE-2021-35961?: Critical severity. CVSS v3 base score is 9.8 out of 10.