What is CVE-2019-13336?

CVE-2019-13336 is a critical-severity vulnerability in Dbell Db01-S, classified under Improper Authentication. CVSS score: 9.8/10. Published 2019-10-08.

How severe is CVE-2019-13336?

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

Auth bypass in Dbell Db01-S

CVE-2019-13336

The dbell Wi-Fi Smart Video Doorbell DB01-S Gen 1 allows remote attackers to launch commands with no authentication verification via TCP port 81, because the loginuse and loginpass parameters to openlock.cgi can have arbitrary values. NOTE: the vendor's position is that this product reached end of life in 2016.

Vulnerability class: Broken Authentication

Published 2019-10-08 · 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: 0.029 (86.3th percentile), scored 2026-10-07.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000

Affected products

Dbell Db01-S — versions gen_1
Dbell Db01-S Firmware

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

www.reddit.com/r/AskNetsec/comments/c9p22m/company_threatening_to_sue_me_if_i_p… (Third Party Advisory, Issue Tracking)
www.youtube.com/watch (Third Party Advisory)
noahclements.com/Improper-Input-Validation-on-dbell-Smart-Doorbell-Can-Lead-To-… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-13336?: CVE-2019-13336 is a critical-severity vulnerability in Dbell Db01-S, classified under Improper Authentication. CVSS score: 9.8/10. Published 2019-10-08.
How severe is CVE-2019-13336?: Critical severity. CVSS v3 base score is 9.8 out of 10.