OCTOBER 13, 2026
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Case File

CVE-2026-81736

HIGH · CVSS 7.5 EPSS 0.57%

Source: NVD + CISA KEV + EPSS · Published 2026-09-16 · Last synced 2026-10-13

CyberRota Analysis

AI-Generated

BIND resolvers that have cached SVCB/HTTPS AliasMode records are vulnerable to excessive CPU consumption when queried for the root of the cached tree, potentially leading to denial-of-service conditions. This issue affects specific versions of BIND 9, and organizations using these versions should prioritize patching to mitigate the risk of service disruption.

CVE
CVE-2026-81736
Severity
HIGH
CVSS
7.5
EPSS
0.57%

Original NVD Description

If a BIND resolver has cached a tree of SVCB/HTTPS AliasMode records, and is then queried for the root of that tree, the resolver will spend disproportionate CPU time constructing the response. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.