CVE-2024-40720

CHANGING Information Technology TCBServiSign Windows Version - Improper Input Validation

HIGH
8.8
CVSS Score
Published: August 2, 2024 at 10:10 AM UTC
Updated: June 17, 2026 at 07:46 AM UTC
2 products affected across 2 vendorsTCBServiSignTcb Servisign

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Severity
HIGH8.8
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.0.24.0318
Affected range stops below 1.0.24.0318, so it looks safe — our inference, not a vendor statement
v < 1.0.24.0318
Affected range stops below 1.0.24.0318, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHtwcert
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-20NVD-CWE-noinfo

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