CVE-2026-3592

MEDIUM5.3

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.

CVSS breakdown

CVSS 3.1

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Affected products

ISC / BIND9.11.0 – 9.16.50
ISC / BIND 99.18.0 – 9.18.48
ISC / BIND 99.20.0 – 9.20.22
ISC / BIND 99.21.0 – 9.21.21
ISC / BIND 99.11.0 – 9.16.50
ISC / BIND 99.18.11-S1 – 9.18.48-S1
ISC / BIND 99.20.9-S1 – 9.20.22-S1
ISC / BIND 99.11.3-S1 – 9.16.50-S1

References

MISChttps://kb.isc.org/docs/cve-2026-3592
MISChttps://downloads.isc.org/isc/bind9/9.18.49
MISChttps://downloads.isc.org/isc/bind9/9.20.23
MISChttps://downloads.isc.org/isc/bind9/9.21.22

Updated 38m ago · 8 sources