CVE-2024-40720

8.8 highEPSS 0.6%

High (8.8) in changingtec tcb servisign. EPSS 0.6% chance of exploitation in the next 30 days.

The specific API in TCBServiSign Windows Version from CHANGING Information Technology does not properly validate server-side input. When a user visits a spoofed website, unauthenticated remote attackers can modify the `HKEY_CURRENT_USER` registry to execute arbitrary commands.

Severity

CVSS 3.1

8.8 high

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

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 48% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2024-08-02
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

changingtec:tcb_servisign

References

https://www.twcert.org.tw/en/cp-139-7971-d9584-2.html
https://www.twcert.org.tw/tw/cp-132-7965-8285d-1.html

Check your stack JSON