CVE-2020-37221: Drive-Software Atomic Alarm Clock

High severity, CVSS 8.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Atomic Alarm Clock 6.3 contains a stack overflow vulnerability that allows local attackers to execute arbitrary code by supplying a malicious string to the display name textbox in the Time Zones Clock configuration. Attackers can craft a buffer with structured exception handling overwrite and encoded shellcode to bypass SafeSEH protections and execute arbitrary commands with application privileges.

Affected products

• Drive-Software Atomic Alarm Clock: version 6.3 only

Published 2026-05-13. Last modified 2026-06-17.