How severe is CVE-2024-40719?

CVE-2024-40719 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-40719 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-40719?

CVE-2024-40719 affects Changingtec Tcb Servisign. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-40719?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-40719 have an EU (EUVD) identifier?

Yes. CVE-2024-40719 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38584.

When was CVE-2024-40719 published?

CVE-2024-40719 was published on 2024-08-02 and last updated on 2026-06-17.

CVE-2024-40719

CVE-2024-40719 is a medium-severity vulnerability in Changingtec Tcb Servisign with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-326.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-38584
Weakness: CWE-326
Affected product: Changingtec Tcb Servisign
Published: 2024-08-02
Last modified: 2026-06-17

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.

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.
How severe is CVE-2024-40719?: CVE-2024-40719 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-40719 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-40719?: CVE-2024-40719 affects Changingtec Tcb Servisign. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-40719?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-40719 have an EU (EUVD) identifier?: Yes. CVE-2024-40719 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38584.
When was CVE-2024-40719 published?: CVE-2024-40719 was published on 2024-08-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:changingtec:tcb_servisign:*:*:*:*:*:windows:*:*

More vulnerabilities in Changingtec Tcb Servisign

CVE-2024-40721 — High (CVSS 8.8): The specific API in TCBServiSign Windows Version from CHANGING Information Technology does not properly validate…
CVE-2024-40720 — High (CVSS 8.8): The specific API in TCBServiSign Windows Version from CHANGING Information Technology does not properly validate…
CVE-2024-40722 — Medium (CVSS 4.3): The specific API in TCBServiSign Windows Version from CHANGING Information Technology does does not properly validate…

All CVEs affecting Changingtec Tcb Servisign →

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