CVE-2026-3592

MediumCVSS 5.3/10Last modified Jul 24, 2026

Description

BIND resolvers are vulnerable to an amplified resource consumption/exhaustion attack. If a victim resolver makes a query to a specially crafted zone, the resolver will consume disproportionate resources. This issue affects BIND 9 versions 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-408

Affected software

Vendor	Product	Versions
ISC	BIND 9	>= 9.11.0, <= 9.16.50; >= 9.18.0, <= 9.18.48; >= 9.20.0, <= 9.20.22; >= 9.21.0, <= 9.21.21; >= 9.11.3-S1, <= 9.16.50-S1; >= 9.18.11-S1, <= 9.18.48-S1; >= 9.20.9-S1, <= 9.20.22-S1

References

https://downloads.isc.org/isc/bind9/9.18.49Patch
https://downloads.isc.org/isc/bind9/9.20.23Patch
https://downloads.isc.org/isc/bind9/9.21.22Patch
https://kb.isc.org/docs/cve-2026-3592Vendor Advisory

Timeline

Published: May 20, 2026
Last modified: Jul 24, 2026
NVD status: Analyzed

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