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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2024-40720

24
FAUCET Score

CVE-2024-40720 describes an input validation vulnerability in the TCBServiSign Windows Version from CHANGING Information Technology. This flaw allows unauthenticated remote attackers to execute arbitrary commands by manipulating the HKEY_CURRENT_USER registry when a user visits a spoofed website. Rated 8.8 HIGH on the CVSS scale, it presents a significant risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion, indicating a low immediate threat but a high potential impact if exploited.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.24.0318CPE matchmatch criteria
cpe:2.3:a:changingtec:tcb_servisign:*:*:*:*:*:windows:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.59%
Probability of exploitation in next 30 days
EPSS Percentile
44.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0059 is in the 46th percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

twcert.org.tw / en/cp-139-7971-d9584-2.html
Third Party Advisory
twcert.org.tw / tw/cp-132-7965-8285d-1.html
Third Party Advisory