How severe is CVE-2020-28713?

CVE-2020-28713 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.

Is CVE-2020-28713 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28713?

CVE-2020-28713 affects Nightowlsp Smart Doorbell Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28713?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-28713 published?

CVE-2020-28713 was published on 2021-06-08 and last updated on 2026-06-17.

CVE-2020-28713

CVE-2020-28713 is a medium-severity vulnerability in Nightowlsp Smart Doorbell Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-294.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 5.8
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-294
Affected product: Nightowlsp Smart Doorbell Firmware
Published: 2021-06-08
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2020-28713?: CVE-2020-28713 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.
Is CVE-2020-28713 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28713?: CVE-2020-28713 affects Nightowlsp Smart Doorbell Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28713?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-28713 published?: CVE-2020-28713 was published on 2021-06-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:nightowlsp:smart_doorbell_firmware:20190505:*:*:*:*:*:*:*

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