A flaw was found in screen. A specially crafted sequence of combining characters could cause an out of bounds write leading to arbitrary code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-26937)
Run yum update screen to update your system.
i686: screen-debuginfo-4.0.3-19.7.amzn1.i686 screen-4.0.3-19.7.amzn1.i686 src: screen-4.0.3-19.7.amzn1.src x86_64: screen-debuginfo-4.0.3-19.7.amzn1.x86_64 screen-4.0.3-19.7.amzn1.x86_64