CVE-2021-27289 Other in n/a
Attackers can inject spoofed commands via replay attacks in Zigbee devices, triggering false alerts and bypassing authentication mechanisms.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-27289?
CVE-2021-27289 is a critical vulnerability in n/a, published on 15 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A replay attack vulnerability was discovered in a Zigbee smart home kit manufactured by Ksix (Zigbee Gateway Module = v1.0.3, Door Sensor = v1.0.7, Motion Sensor = v1.0.12), where the Zigbee anti-replay mechanism - based on the frame counter field - is improperly implemented. As a result, an attacker within wireless range can resend captured packets with a higher sequence number, which the devices incorrectly accept as legitimate messages. This allows spoofed commands to be injected without authentication, triggering false alerts and misleading the user through notifications in the mobile application used to monitor the network.
Weakness: CWE-294
Which versions are affected by CVE-2021-27289?
How do I fix CVE-2021-27289?
No fix has been published for CVE-2021-27289 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-27289 being exploited?
There is no known exploitation of CVE-2021-27289 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-25fv-45mr-wm5r.