CVE intelligence and bounded remediation
CVE-2024-12839 — The login mechanism via device authentication of CGFIDO from Changing Information Technology has an Authentication Bypass vulnerability
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
- High
- CVSS
- 8.8 (3.1)
- Published
- 2024-12-31
- CISA KEV
- Not currently listed
- Ecosystem
- software/application
- Weaknesses
- CWE-294
Affected products
No browser-safe affected-product rows are available.
Matched remediation archetype
Authentication bypass and missing authentication
This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.
Check exposure
- Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
- Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
- Review session, token, credential, and proxy trust configuration without attempting account takeover.
Remediate safely
- Apply the supported fix and centralize fail-closed authentication before protected request handling.
- Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
- Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.
Authoritative sources
Complete CVE record and remediation plan
The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.