Buffer Overflow in Parallaxis Cuckoo Clock 5.0 Affects Alarm Scheduling Feature
CVE-2020-37159

8.4HIGH

Key Information:

Vendor

Parallaxis

Status
Cuckoo Clock
Vendor
CVE Published:
6 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-37159?

Parallaxis Cuckoo Clock 5.0 contains a buffer overflow vulnerability in its alarm scheduling feature, which can be exploited by attackers to execute arbitrary code by manipulating memory registers. By crafting a payload larger than 260 bytes, an attacker can overwrite critical registers, such as EIP and EBP, enabling the execution of shellcode. This vulnerability poses a significant threat, allowing unauthorized actions on the affected device.

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Affected Version(s)

Cuckoo Clock 5.0

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-2020-37159 - Proof of Concept

References

https://www.exploit-db.com/exploits/48087
exploit
https://en.softonic.com/author/pxcompany
product
https://www.vulncheck.com/advisories/cuckoo-clock-buffer-...
third-party-advisory

CVSS V4

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

boku
JSON
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