Stack Overflow Vulnerability in Atomic Alarm Clock by Atomic Software
CVE-2020-37221

8.6HIGH

Key Information:

Vendor

Drive-software

Status
Atomic Alarm Clock
Vendor
CVE Published:
13 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-37221?

Atomic Alarm Clock 6.3 has a stack overflow vulnerability that could be exploited by local attackers. By supplying a specially crafted string in the Time Zones Clock configuration's display name textbox, attackers can manipulate the buffer and trigger a structured exception handling overwrite. This exploitation allows them to bypass SafeSEH protections, eventually executing arbitrary commands with the privileges of the application. Proper validation and sanitization of user inputs are essential to mitigate this risk.

Affected Version(s)

Atomic Alarm Clock 6.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-37221 - Proof of Concept

References

https://www.exploit-db.com/exploits/48346
exploit
https://www.vulncheck.com/advisories/atomic-alarm-clock-s...
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Bobby Cooke
.