CVE-2025-47941Network attack vector

Backend MFA bypass via inverted route check

Published May 20, 2025 · Updated May 20, 2025

Authentication bypass in TYPO3 CMS 12.0.0 through 12.4.30 and 13.0.0 through 13.4.11 allows remote authenticated users to bypass backend MFA. BackendUserAuthenticator reverses the route-authorization condition, redirecting sessions to auth_mfa only when a route does not require a logged-in backend user. Valid backend credentials and an account configured for MFA are required; protected backend routes then become reachable without completing the second factor.

CVSS severity7.2
High
EPSS probability0.45%
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 TYPO3 CMS 12.0.0 through 12.4.30 and 13.0.0 through 13.4.11 allows remote authenticated users to bypass backend MFA. BackendUserAuthenticator reverses the route-authorization condition, redirecting sessions to auth_mfa only when a route does not require a logged-in backend user. Valid backend credentials and an account configured for MFA are required; protected backend routes then become reachable without completing the second factor.

The record

CVE
CVE-2025-47941
Published
May 20, 2025
Updated
May 20, 2025
Vendor
in2code GmbH
Product
TYPO3 CMS
Classifications
CWE-288, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 2025CVE publishedPublication date reported by the CVE source.
  2. May 20, 2025Record 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=>= 12.0.0, < 12.4.31
  2. Affected versionversion=>= 13.0.0, < 13.4.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

in2code GmbH · TYPO3 CMSversion=>= 12.0.0, < 12.4.31; version=>= 13.0.0, < 13.4.12

Published CVSS scores

7.2GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/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-288Authentication Bypass Using an Alternate Path or Channel
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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