In January, security researchers disclosed a new vulnerability that can affect Unix-based operating systems. The exploit is identified as CVE-2021-3156, heap-based buffer overflow in Sudo. The exploit appears similar to a previously patched flaw called CVE-2019-18634.
A decade-old flaw found in the Sudo tool could lead to root access on Unix-based systems, including macOS Big Sur and earlier versions.
Sudo exploit in Unix could lead to root access