Internet Systems Consortium BIND: Mehrere Schwachstellen
WID-SEC-2026-4116 · first 22.10.2026 · updated 26.10.2026 · CVSS 8,1
What it is about
BIND (Berkeley Internet Name Domain) ist ein Open-Source-Softwarepaket, das einen Domain-Name-System-Server implementiert. Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Internet Systems Consortium BIND ausnutzen, um einen Denial of Service Angriff durchzuführen oder möglicherweise beliebigen Code 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
- einen Denial of Service Angriff durchzuführen oder möglicherweise beliebigen Code auszuführen
Am I affected?
Affected according to the BSI:
- Debian Linux
- Amazon Linux 2
- Internet Systems Consortium BIND <9.20.30
- Internet Systems Consortium BIND <9.21.27
- Internet Systems Consortium BIND Supported Preview Edition <9.20.30-S1
- Internet Systems Consortium BIND >=9.11.0
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Internet Systems Consortium BIND 9.20.30
- Internet Systems Consortium BIND 9.21.27
- Internet Systems Consortium BIND Supported Preview Edition 9.20.30-S1
- Internet Systems Consortium BIND >=9.11.0
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)
- ISC Vulnerability vom 2026-10-21 kb.isc.org
- ISC Vulnerability vom 2026-10-21 kb.isc.org
- ISC Vulnerability vom 2026-10-21 kb.isc.org
- ISC Vulnerability vom 2026-10-21 kb.isc.org
- Debian Security Advisory DSA-6576 vom 2026-10-22 security-tracker.debian.org
- Amazon Linux Security Advisory ALAS2-2026-4038 vom 2026-10-25 alas.aws.amazon.com
CVE: CVE-2026-19630, CVE-2026-96888, CVE-2026-97313, CVE-2026-94300
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.