CVE-2020-37159 | Parallaxis Cuckoo Clock 5.0 contains a buffer overflow vulne… | CVSS 9.8 CRITICAL

Description

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.

Metadata

CVE ID: CVE-2020-37159
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-02-03 16:27 UTC
Published: 2026-02-06 23:14 UTC
Last updated: 2026-02-17 16:57 UTC
Primary CWE: CWE-121
Stack-based Buffer Overflow
Vendor / Product: Parallaxis / Cuckoo Clock
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Parallaxis	Cuckoo Clock	—	5.0

Weakness (CWE)

CWE	Source	Description
CWE-121	cna	Stack-based Buffer Overflow

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.4	HIGH	4.0	cna	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References (3)

ExploitDB-48087 https://www.exploit-db.com/exploits/48087
Vendor Homepage https://en.softonic.com/author/pxcompany
VulnCheck Advisory: Cuckoo Clock 5.0 - Buffer Overflow https://www.vulncheck.com/advisories/cuckoo-clock-buffer-overflow