CVE-2026-11605: Unnecessary validation of DNSSEC signed records
ISC · BIND 9
Vendor fix available · Affected: ISC BIND 9 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 52% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- ISC · BIND 9from 9.20.0 up to and including 9.20.24; from 9.21.0 up to and including 9.21.23; from 9.20.9-S1 up to and including 9.20.24-S1
On the Atlas
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-11605 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.