CVE-2020-28713

Name: CVE-2020-28713
Creator: NVD / NIST
Published: 2021-06-08T19:15:07.84+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.36%

Last modified Jun 17, 2026

CVE-2020-28713 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Incorrect access control in push notification service in Night Owl Smart Doorbell FW version 20190505 allows remote users to send push notification events via an exposed PNS server. A remote attacker can passively record push notification events which are sent over an insecure web request. EPSS estimates a 1.36% chance of exploitation in the next 30 days.

Description

Incorrect access control in push notification service in Night Owl Smart Doorbell FW version 20190505 allows remote users to send push notification events via an exposed PNS server. A remote attacker can passively record push notification events which are sent over an insecure web request. The web service does not authenticate requests, and allows attackers to send an indefinite amount of motion or doorbell events to a user's mobile application by either replaying or deliberately crafting false events.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.36%

68.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-294

Affected Software

Vendor	Product	Versions
Nightowlsp	Smart Doorbell Firmware	20190505

References

https://cloud.binary.ninja/embed/26671c64-6859-48fb-b58e-af35dc982b35Patch, Vendor Advisory
https://gist.github.com/tj-oconnor/dbfbef4d3b271d53fefbd24e1f0024f0Exploit, Third Party Advisory
https://cloud.binary.ninja/embed/26671c64-6859-48fb-b58e-af35dc982b35Patch, Vendor Advisory
https://gist.github.com/tj-oconnor/dbfbef4d3b271d53fefbd24e1f0024f0Exploit, Third Party Advisory

Timeline

Published: Jun 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-28713?

How severe is CVE-2020-28713?

CVE-2020-28713 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.36% probability of exploitation in the next 30 days.

How do I fix CVE-2020-28713?

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-2020-28713?

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

Scan your code now

Source: NVD / NIST