OCTOBER 13, 2026
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Case File

CVE-2026-80274

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 are vulnerable to a flaw that can cause an unexpected program exit when processing certain DNSSEC responses involving wildcard answers and NSEC3 proofs. This vulnerability affects multiple versions of BIND 9, and its exploitation could lead to service disruptions. Organizations using affected BIND versions should prioritize patching to mitigate potential downtime and ensure DNS service reliability.

CVE
CVE-2026-80274
Severity
HIGH
CVSS
7.5
EPSS
0.57%

Original NVD Description

If a BIND resolver sends a query for a DNSSEC-signed authoritative zone, and the authoritative server replies with a valid wildcard answer and signed NSEC3 proof, followed by an unsigned NSEC at the same owner name, it will trigger an unexpected program exit. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.