CVE-2026-3592

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 v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:isc:bind:::::-:::*
	cpe:2.3:a:isc:bind:::::-:::*
	cpe:2.3:a:isc:bind:::::-:::*
	cpe:2.3:a:isc:bind:::::-:::*

History

21 May 2026, 15:24

Type	Values Removed	Values Added
CPE		cpe:2.3:a:isc:bind:::::-:::*
References	~~() https://downloads.isc.org/isc/bind9/9.18.49 -~~	() https://downloads.isc.org/isc/bind9/9.18.49 - Patch
References	~~() https://downloads.isc.org/isc/bind9/9.20.23 -~~	() https://downloads.isc.org/isc/bind9/9.20.23 - Patch
References	~~() https://downloads.isc.org/isc/bind9/9.21.22 -~~	() https://downloads.isc.org/isc/bind9/9.21.22 - Patch
References	~~() https://kb.isc.org/docs/cve-2026-3592 -~~	() https://kb.isc.org/docs/cve-2026-3592 - Vendor Advisory
First Time		Isc bind Isc

20 May 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-20 13:16

Updated : 2026-05-21 15:24

NVD link : CVE-2026-3592

Mitre link : CVE-2026-3592

CVE.ORG link : CVE-2026-3592

JSON object : View

Products Affected

isc

bind

CWE

CWE-408

Incorrect Behavior Order: Early Amplification

{"id": "CVE-2026-3592", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "security-officer@isc.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "published": "2026-05-20T13:16:23.790", "references": [{"url": "https://downloads.isc.org/isc/bind9/9.18.49", "tags": ["Patch"], "source": "security-officer@isc.org"}, {"url": "https://downloads.isc.org/isc/bind9/9.20.23", "tags": ["Patch"], "source": "security-officer@isc.org"}, {"url": "https://downloads.isc.org/isc/bind9/9.21.22", "tags": ["Patch"], "source": "security-officer@isc.org"}, {"url": "https://kb.isc.org/docs/cve-2026-3592", "tags": ["Vendor Advisory"], "source": "security-officer@isc.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-officer@isc.org", "description": [{"lang": "en", "value": "CWE-408"}]}], "descriptions": [{"lang": "en", "value": "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.\nThis 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."}], "lastModified": "2026-05-21T15:24:25.007", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "9EC5B9B1-25F2-48CA-9E8A-59D8E81D408A", "versionEndIncluding": "9.16.50", "versionStartIncluding": "9.11.0"}, {"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "49533F8C-D7B5-450A-8808-7E1C76F4FAE4", "versionEndExcluding": "9.18.49", "versionStartIncluding": "9.18.0"}, {"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "D92461F1-BA01-479E-B740-38855CC216E6", "versionEndExcluding": "9.20.23", "versionStartIncluding": "9.20.0"}, {"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*", "vulnerable": true, "matchCriteriaId": "B254E8E7-3F57-4552-ACBF-623FA481B697", "versionEndExcluding": "9.21.22", "versionStartIncluding": "9.21.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-officer@isc.org"}