CVE-2024-12839

8.8 highEPSS 0.7%

High (8.8). EPSS 0.7% chance of exploitation in the next 30 days.

The login mechanism via device authentication of CGFIDO from Changing Information Technology has an Authentication Bypass vulnerability. If a user visits a forged website, the agent program deployed on their device will send an authentication signature to the website. An unauthenticated remote attacker who obtains this signature can use it to log into the system with any device.

Severity

CVSS 3.1

8.8 high

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

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-31)
CWE: CWE-294
Published: 2024-12-31
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://www.twcert.org.tw/en/cp-139-8335-e4a3f-2.html
https://www.twcert.org.tw/tw/cp-132-8334-8b836-1.html

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