CVE-2026-11605
highpriority · track · 0EPSS 0.007 · 52 %ileDEEUEPSS · scored 2026-10-27
The issue is a resource exhaustion vulnerability associated with DNSSEC validation. BIND always validates all RRSIG records in an answer, even if they are not strictly needed. A query to an authoritative server/zone which returns many valid but superfluous RRSIG records causes the validator to waste disproportionate CPU time. This issue affects BIND 9 versions 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, and 9.20.9-S1 through 9.20.24-S1.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (21)
Products and version ranges known to be affected.
- Red Hat OpenShift Container Platformall versionscert_bundDEcpe:/a:redhat:openshift:container_platform
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-2484Internet Systems Consortium BIND: Mehrere SchwachstellenDeutsch2026-07-22csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Internet Systems Consortium BIND ausnutzen, um Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand auszulösen.
- WID-SEC-W-2026-3038Meinberg LANTIME: Mehrere SchwachstellenDeutsch2026-08-26csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Meinberg LANTIME ausnutzen, um beliebigen Code auszuführen, Berechtigungen zu erweitern, Sicherheitsmaßnahmen zu umgehen, sensible Informationen offenzulegen, Daten zu manipulieren oder Denial-of-Service-Zustände herbeizuführen.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- https://downloads.isc.org/isc/bind9/9.20.26cnnvd
- https://downloads.isc.org/isc/bind9/9.21.24cnnvd
- https://kb.isc.org/docs/cve-2026-11605cnnvd
- https://downloads.isc.org/isc/bind9/9.20.26enisa_euvd
- https://downloads.isc.org/isc/bind9/9.21.24enisa_euvd
- https://kb.isc.org/docs/cve-2026-11605enisa_euvd
- https://downloads.isc.org/isc/bind9/9.20.26nvd
- https://downloads.isc.org/isc/bind9/9.21.24nvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan