CVE-2020-37159: Parallaxis Cuckoo Clock

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Parallaxis Cuckoo Clock 5.0 contains a buffer overflow vulnerability that allows attackers to execute arbitrary code by overwriting memory registers in the alarm scheduling feature. Attackers can craft a malicious payload exceeding 260 bytes to overwrite EIP and EBP, enabling shellcode execution with potential remote code execution.

Affected products

• Parallaxis Cuckoo Clock: version 5.0 only

Published 2026-02-07. Last modified 2026-06-17.