CVE-2024-40719

MEDIUM

CHANGING TCBServiSign - Weak Authorization Key Server Spoofing

Title source: manual

Description

The encryption strength of the authorization keys in CHANGING Information Technology TCBServiSign Windows Version is insufficient. When a remote attacker tricks a victim into visiting a malicious website, TCBServiSign will treat that website as a legitimate server and interact with it.

References (2)

Core 2

Core References

Third Party Advisory third-party-advisory

https://www.twcert.org.tw/tw/cp-132-7964-5b266-1.html

Third Party Advisory third-party-advisory

https://www.twcert.org.tw/en/cp-139-7970-e8ac5-2.html

Scores

CVSS v3 6.5

EPSS 0.0018

EPSS Percentile 7.1%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-326

Status published

Products (1)

changingtec/tcb_servisign < 1.0.24.0318

Published Aug 02, 2024

Tracked Since Feb 18, 2026