CVE-2020-37126

CRITICAL

Free Desktop Clock 3.0 - Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2020-37126. PoCs published by boku.

AI-analyzed exploit summary This exploit demonstrates a Unicode stack overflow vulnerability in Free Desktop Clock 3.0, leveraging SEH overwrite and the Venetian Blinds technique to bypass bad characters and execute arbitrary code. The PoC includes a detailed decoder and shellcode execution mechanism.

Description

Free Desktop Clock 3.0 contains a stack overflow vulnerability in the Time Zones display name input that allows attackers to overwrite Structured Exception Handler (SEH) registers. Attackers can exploit the vulnerability by crafting a malicious Unicode input that triggers an access violation and potentially execute arbitrary code.

Exploits (1)

exploitdb WORKING POC
by boku · pythonlocalwindows_x86
https://www.exploit-db.com/exploits/48314

This exploit demonstrates a Unicode stack overflow vulnerability in Free Desktop Clock 3.0, leveraging SEH overwrite and the Venetian Blinds technique to bypass bad characters and execute arbitrary code. The PoC includes a detailed decoder and shellcode execution mechanism.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Complex
Reliability
Reliable
Target: Free Desktop Clock 3.0
No auth needed
Prerequisites: Windows 10 (x86) environment · Free Desktop Clock 3.0 installed
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/48314
Various Sources product
http://www.drive-software.com

Scores

CVSS v3 9.8
EPSS 0.0055
EPSS Percentile 41.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-121
Status published
Products (1)
Drive Software Company/Free Desktop Clock 3.0
Published Feb 05, 2026
Tracked Since Feb 18, 2026