CVE-2021-22764 Auth bypass in PowerLogic PM55xx, PowerLogic EGX100, and PowerLogic EGX300 (see security notification for version infromation)
An attacker can cause loss of connectivity to PowerLogic devices by sending a specially crafted HTTP request due to improper authentication.
- 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-2021-22764?
CVE-2021-22764 is a medium-severity authentication bypass vulnerability in PowerLogic PM55xx, PowerLogic EGX100, and PowerLogic EGX300 (see security notification for version infromation), published on 11 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A CWE-287: Improper Authentication vulnerability exists in PowerLogic PM55xx, PowerLogic PM8ECC, PowerLogic EGX100 and PowerLogic EGX300 (see security notification for version infromation) that could cause loss of connectivity to the device via Modbus TCP protocol when an attacker sends a specially crafted HTTP request.
Weakness: CWE-287
Which versions are affected by CVE-2021-22764?
It affects 4 products.
Products include Schneider-Electric Powerlogic Pm5560 Firmware, Schneider-Electric Powerlogic Pm5561 Firmware, Schneider-Electric Powerlogic Pm5562 Firmware, Schneider-Electric Powerlogic Pm5563 Firmware.
How do I fix CVE-2021-22764?
No fix has been published for CVE-2021-22764 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-22764 being exploited?
There is no known exploitation of CVE-2021-22764 in the wild and no public exploit code.
Other vulnerabilities in PowerLogic PM55xx, PowerLogic EGX100, and PowerLogic EGX300 (see security notification for version infromation)
Sources
Also known as GHSA-57rv-qg24-x8hj.