CVE-2020-28713
Incorrect access control in push notification service in Night Owl Smart Doorbell FW version...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2020-28713- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H - CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:P - Weakness
- CWE-294
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2020-28713- Updated
- 2026-11-02
EUVDEUVD-2020-21111 No score
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.
- Record
EUVD-2020-21111- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w273-hj4m-f2f7 No score
Incorrect access control in push notification service in Night Owl Smart Doorbell FW version...
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.
- Record
GHSA-w273-hj4m-f2f7- Weakness
- CWE-294
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-28713
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.
- Record
UBUNTU-CVE-2020-28713- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
smaUbuntu:16.04:LTS |
All versions, plus listed versions 1.4-3 |
None known |
smaUbuntu:18.04:LTS |
All versions, plus listed versions 1.4-31.4-3build1 |
None known |
smaUbuntu:20.04:LTS |
All versions, plus listed versions 1.4-3build1 |
None known |
smaUbuntu:22.04:LTS |
All versions, plus listed versions 1.4-3.1 |
None known |
smaUbuntu:24.04:LTS |
All versions, plus listed versions 1.4-3.1 |
None known |
smaUbuntu:25.10 |
All versions, plus listed versions 1.4-3.1 |
None known |
smaUbuntu:26.10 |
All versions, plus listed versions 1.4-3.2 |
None known |
smaUbuntu:26.04:LTS |
All versions, plus listed versions 1.4-3.11.4-3.1build11.4-3.2 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-28713 is a medium vulnerability (CVSS 6.5) in Nightowlsp Smart Doorbell Firmware, published June 8, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.36%, the 71st percentile. No source names a fixed version.