What is CVE-2020-37221?

CVE-2020-37221 is a high-severity vulnerability in Drive-software Atomic Alarm Clock, classified under Stack-based Buffer Overflow. CVSS score: 8.4/10. Published 2026-05-13.

How severe is CVE-2020-37221?

High severity. CVSS v3 base score is 8.4 out of 10.

Buffer overflow in Drive-software Atomic Alarm Clock

CVE-2020-37221

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 b…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (4.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Drive-software Atomic Alarm Clock — versions 6.3

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2020-37221?: CVE-2020-37221 is a high-severity vulnerability in Drive-software Atomic Alarm Clock, classified under Stack-based Buffer Overflow. CVSS score: 8.4/10. Published 2026-05-13.
How severe is CVE-2020-37221?: High severity. CVSS v3 base score is 8.4 out of 10.