Customers of the Ivanti Endpoint Protection Manager should patch or mitigate ASAP.
https://arstechnica.com/security/2024/01/ivanti-warns-of-critical-vulnerability-in-its-popular-line-of-endpoint-protection-software/
https://arstechnica.com/security/2024/01/ivanti-warns-of-critical-vulnerability-in-its-popular-line-of-endpoint-protection-software/