CVE-2020-37221

HIGH 8.4

Atomic Alarm Clock 6.3 Stack Overflow via SEH Unicode

CVSS Score

8.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-121
Vendor	drive-software
Product	atomic alarm clock
Published	May 13, 2026
Last Updated	May 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Drive-software / Atomic Alarm Clock

6.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/48346 vulncheck.com: https://www.vulncheck.com/advisories/atomic-alarm-clock-stack-overflow-via-seh-unicode

Credits

Bobby Cooke