An integer overflow exists in pywin32 prior to version b301 when adding an access control entry (ACE) to an access control list (ACL) that would cause the size to be greater than 65535 bytes.
CVSS 3.1MEDIUM 6.5·Network·Low privileges·No interaction·EPSS 0.01729·Published 2021-07-06·Fixed in 301CWE-190