TYPO3 Core: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen
WID-SEC-2025-1834 · first 14.08.2025 · updated 21.01.2026 · CVSS 5,4
What it is about
TYPO3 ist ein freies Content-Management-System, basierend auf der Scriptsprache PHP und einer SQL-Datenbank. Über zahlreiche Extensions kann der Funktionsumfang der Core-Installation individuell erweitert werden. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in TYPO3 Core ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- Sicherheitsvorkehrungen zu umgehen
Am I affected?
Affected according to the BSI:
- TYPO3 Core <9.5.54 ELTS
- TYPO3 Core <10.4.53 ELTS
- TYPO3 Core <11.5.47 ELTS
- TYPO3 Core <12.4.36 ELTS
- TYPO3 Core <13.4.17 ELTS
- Open Source ILIAS <9.17
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- TYPO3 Core 9.5.54 ELTS
- TYPO3 Core 10.4.53 ELTS
- TYPO3 Core 11.5.47 ELTS
- TYPO3 Core 12.4.36 ELTS
- TYPO3 Core 13.4.17 ELTS
- Open Source ILIAS 9.17
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- Typo3 Security Advisory TYPO3-PSA-2025-001 vom 2025-08-13 typo3.org
- Ilias Security-Blog vom 2026-01-20 docu.ilias.de
- Ilias Security-Blog vom 2026-01-20 docu.ilias.de
CVE: CVE-2025-55166
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.