CVE-2021-31793

Name: CVE-2021-31793
Creator: NVD / NIST
Published: 2021-05-06T17:15:08.113+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.27%

Last modified Jun 17, 2026

CVE-2021-31793 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue exists on NightOwl WDB-20-V2 WDB-20-V2_20190314 devices that allows an unauthenticated user to gain access to snapshots and video streams from the doorbell. The binary app offers a web server on port 80 that allows an unauthenticated user to take a snapshot from the doorbell camera via the /snapshot URI.. EPSS estimates a 1.27% chance of exploitation in the next 30 days.

Description

An issue exists on NightOwl WDB-20-V2 WDB-20-V2_20190314 devices that allows an unauthenticated user to gain access to snapshots and video streams from the doorbell. The binary app offers a web server on port 80 that allows an unauthenticated user to take a snapshot from the doorbell camera via the /snapshot URI.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.27%

66.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Nightowlsp	Wdb-20 Firmware	20190314

References

https://cloud.binary.ninja/embed/f4400a22-c438-403a-bf2a-939ca44a4f6bThird Party Advisory
https://gist.github.com/tj-oconnor/16a4116050bbcb4717315f519b944f1fThird Party Advisory
https://cloud.binary.ninja/embed/f4400a22-c438-403a-bf2a-939ca44a4f6bThird Party Advisory
https://gist.github.com/tj-oconnor/16a4116050bbcb4717315f519b944f1fThird Party Advisory

Timeline

Published: May 6, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-31793?

How severe is CVE-2021-31793?

CVE-2021-31793 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.27% probability of exploitation in the next 30 days.

How do I fix CVE-2021-31793?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-31793?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST