Critical severity · published Feb 5, 2026
CVE-2020-37126
Free Desktop Clock x86 Venetian Blinds Zipper 3.0 - Unicode Stack Overflow (SEH)
9.8
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FD
Free Desktop Clock · Drive Software Company
3.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-37126
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-37126
www.drive-software.com
http://www.drive-software.com
www.exploit-db.com
https://www.exploit-db.com/exploits/48314
www.vulncheck.com
https://www.vulncheck.com/advisories/free-desktop-clock-x-venetian-blinds-zipper-unicode-stack-overflow-seh