CVE-2021-22733 Privilege escalation in homeLYnk (Wiser For KNX) and spaceLYnk V2.60 and prior

High 7.8 Published 26 May 2021 Updated 3 Aug 2024

Attackers can gain shell access and execute arbitrary code by loading unauthorized files into the system folder of Schneider homeLYnk and spaceLYnk devices.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-22733?

CVE-2021-22733 is a high-severity vulnerability in homeLYnk (Wiser For KNX) and spaceLYnk V2.60 and prior, published on 26 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Improper Privilege Management vulnerability exists in homeLYnk (Wiser For KNX) and spaceLYnk V2.60 and prior which could cause shell access when unauthorized code is loaded into the system folder.

Weakness: CWE-269

Which versions are affected by CVE-2021-22733?

It affects 2 products.

Products include Schneider-Electric Homelynk Firmware, Schneider-Electric Spacelynk Firmware.

How do I fix CVE-2021-22733?

No fix has been published for CVE-2021-22733 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-22733 being exploited?

There is no known exploitation of CVE-2021-22733 in the wild and no public exploit code.

Sources

Also known as GHSA-6xx3-j36r-9j4v.