CVE-2019-13336: The dbell Wi-Fi Smart Video Doorbell DB01-S Gen 1 allows remote attackers to launch commands with no authentic

This week

CRITICAL 9.8REMOTEMITIGATE

CVE-2019-13336 is a critical-severity flaw (CVSS 9.8) affecting db01-s firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.9% (top 13%)
CISA exploited list	No
Weakness	CWE-287
Published	2019-10-08
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: dbell

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-10-08 13:15 UTCPublished CVE record published
2026-06-17 02:16 UTCUpdated Record last modified

dbell db01-s firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-13336?

db01-s firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2019-13336 being exploited?

CVE-2019-13336 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-13336 affect?

CVE-2019-13336 affects db01-s firmware. Severity is critical (CVSS 9.8). 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:

How urgent is CVE-2019-13336?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Wi-Fi vulnerabilities

References

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