What is CVE-2024-40720?

CVE-2024-40720 is a high-severity vulnerability in Changing Information Technology Tcbservisign Windows Version, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2024-08-02.

How severe is CVE-2024-40720?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2024-40720 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in Changing Information Technology Tcbservisign Windows Version

CVE-2024-40720

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.006 (44.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Changing Information Technology Tcbservisign Windows Version — versions 0
Changingtec Tcb_servisign

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

twcert@cert.org.tw (Third Party Advisory, third-party-advisory)
twcert@cert.org.tw (Third Party Advisory)

Frequently asked questions

What is CVE-2024-40720?: CVE-2024-40720 is a high-severity vulnerability in Changing Information Technology Tcbservisign Windows Version, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2024-08-02.
How severe is CVE-2024-40720?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2024-40720 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.