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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.007 (49.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.000
Affected products
- Parallaxis Cuckoo Clock — versions 5.0
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/48087 (exploit)
- en.softonic.com/author/pxcompany (product)
- www.vulncheck.com/advisories/cuckoo-clock-buffer-overflow (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.