CVE-2020-37126 Free Desktop Clock x86 Venetian Blinds Zipper 3.0 - Unicode Stack Overflow (SEH)
Attackers can execute arbitrary code by exploiting a stack overflow in the Time Zones display name input of Free Desktop Clock.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-37126?
CVE-2020-37126 is a high-severity memory corruption vulnerability in Drive Software Company Free Desktop Clock, published on 5 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-121
Which versions are affected by CVE-2020-37126?
How do I fix CVE-2020-37126?
No fix has been published for CVE-2020-37126 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-37126 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37126 exists.
Sources
Also known as GHSA-h96x-jjwq-mx4j.