CVE-2024-12838Network attack vector

Authenticated account takeover via crafted identity-switch request

Published Dec 31, 2024 · Updated Dec 31, 2024

Authentication bypass in CGFIDO before 1.1.0 allows remote authenticated users to assume any user identity, including administrators. The passwordless login mechanism accepts a crafted identity-switch request without requiring authentication as the selected account. A regular account is required; successful exploitation grants the selected account's access, while implementation details remain undisclosed.

CVSS severity8.8
High
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in CGFIDO before 1.1.0 allows remote authenticated users to assume any user identity, including administrators. The passwordless login mechanism accepts a crafted identity-switch request without requiring authentication as the selected account. A regular account is required; successful exploitation grants the selected account's access, while implementation details remain undisclosed.

The record

CVE
CVE-2024-12838
Published
Dec 31, 2024
Updated
Dec 31, 2024
Vendor
CHANGING Information Technology Inc.
Product
CGFIDO
Classifications
CWE-302, CAPEC-233, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 31, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 31, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.0.1 <1.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CHANGING Information Technology Inc. · CGFIDOversion=0.0.1 <1.1.0

Published CVSS scores

8.8TWCERT/CCCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-302Authentication Bypass by Assumed-Immutable Data
CAPEC-233Privilege Escalation
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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