D-LINK Router: Schwachstelle ermöglicht Codeausführung
WID-SEC-2026-0024 · first 07.01.2026 · updated 07.01.2026 · CVSS 9,8
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, anonymer Angreifer kann eine Schwachstelle in D-LINK Router ausnutzen, um beliebigen Programmcode auszuführen.
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
- beliebigen Programmcode auszuführen
Am I affected?
Affected according to the BSI:
- D-LINK Router DSL-526B <=2.01
- D-LINK Router DSL-2640B <=1.07
- D-LINK Router DSL-2740R <1.17
- D-LINK Router DSL-2780B <=1.01.14
- D-LINK Router DSL-2740R <=1.15
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.
Information and sources
- Original BSI advisory (WID)
- NIST Vulnerability Gateway vom 2026-01-06 nvd.nist.gov
- D-Link Support Announcement vom 2026-01-06 supportannouncement.us.dlink.com
- VulnCheck Advisory CVE-2026-0625 www.vulncheck.com
- Exploit für D-Link ADSL DSL-2640B GE_1.07 www.exploit-db.com
- Exploit für D-Link ADSL D-Link DSL-2740R www.exploit-db.com
- Exploit für D-Link ADSL DSL-2780B DLink_1.01.14 www.exploit-db.com
- Exploit für D-Link ADSL DSL-526B ADSL2+ AU_2.01 www.exploit-db.com
CVE: CVE-2026-0625
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.