Microsoft Edge (Android): Schwachstelle ermöglicht Darstellen falscher Informationen
WID-SEC-2026-0334 · first 06.02.2026 · updated 09.02.2026 · CVSS 6,5
What it is about
Edge ist ein Web Browser von Microsoft. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Microsoft Edge ausnutzen, um UI-Spoofing durchzuführen, was zur Offenlegung vertraulicher Informationen oder zur Änderung von Daten führen kann.
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
- UI-Spoofing durchzuführen
- was zur Offenlegung vertraulicher Informationen oder zur Änderung von Daten führen kann
Am I affected?
Affected according to the BSI:
- Microsoft Edge <143.0.3650.66
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Microsoft Edge 143.0.3650.66
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)
- Microsoft Security Update Guide vom 2026-02-05 msrc.microsoft.com
CVE: CVE-2026-0391
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.