CVE-2024-40719: tcb servisign Weak Crypto (CVSS 6.5)

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.

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CVSS v3.1 Score

6.5

MEDIUM

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

Weakness Type (CWE)

CWE-326 CWE-326

Affected Products

Vendor	Product	Versions
changingtec	tcb_servisign	< 1.0.24.0318

References

Other References

https://www.twcert.org.tw/en/cp-139-7970-e8ac5-2.html https://www.twcert.org.tw/tw/cp-132-7964-5b266-1.html

Frequently Asked Questions

What is CVE-2024-40719? +

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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2024-40719? +

CVE-2024-40719 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-40719? +

CVE-2024-40719 affects products from changingtec, specifically: tcb_servisign. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-40719? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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