What it is about

Router der Firma D-LINK enthalten eine Firewall und in der Regel eine WLAN-Schnittstelle. Die Geräte sind hauptsächlich für private Anwender und Kleinunternehmen konzipiert. Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in D-LINK Router ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen.

Under what conditions?

Over the network, but only with valid access (login required), for example with stolen credentials or as an insider.

What can happen in the worst case

An attacker could use the vulnerability to

• beliebigen Programmcode mit Administratorrechten auszuführen

Am I affected?

Affected according to the BSI:

• D-LINK Router DIR-823X firwmare 250416
• D-LINK Router DWR-M921 firmware 1.1.50

The installed version is usually shown under “Help → About” or in the device’s admin interface.

What helps?

According to the BSI there is no update yet. The vendor notices below name interim protective measures, if any.

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.