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Fencer Vulns
high 8.8

CVE-2024-12838 json

Changing Information Technology CGFIDO - Authentication Bypass

published 2024-12-31 22 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-51139

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

The passwordless login mechanism in CGFIDO from Changing Information Technology has an Authentication Bypass vulnerability, allowing remote attackers with regular privileges to send a crafted request to switch to the identity of any user, including administrators.

Patch / fix

  • Changing Information Technology CGFIDO 1.1.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
22 mo ago

Exploit prediction

0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Changing Information Technology CGFIDO

Classification

Weakness
  • CWE-302 Authentication Bypass by Assumed-Immutable Data

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.