Buffer overflow in Parallaxis Cuckoo Clock
CVE-2020-37159
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.
Vulnerability class: Buffer Overflow
EPSS: 0.006 (45.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Parallaxis Cuckoo Clock — versions 5.0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (exploit)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2020-37159?
- CVE-2020-37159 is a critical-severity vulnerability in Parallaxis Cuckoo Clock, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-02-07.
- How severe is CVE-2020-37159?
- Critical severity. CVSS v3 base score is 9.8 out of 10.