ByteOS Network

NVD Vulnerability Details :

CVE-2026-11622

Awaiting Analysis

Source-security-officer@isc.org

Published At-22 Jul, 2026 | 15:16

Updated At-22 Jul, 2026 | 20:33

A DNSSEC validating resolver that is under a random subdomain attack against a DNSSEC-signed zone can suffer from runaway memory usage. The attacker needs to be able to send queries faster than the resolver can perform validation. The increased memory usage can be orders of magnitude beyond the limit configured in the `max-cache-size` parameter. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
			N/A

Type: Secondary

Version: 3.1

Base score: 7.5

Base severity: HIGH

Vector:

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

Type: N/A

Version:

Base score:

Base severity: N/A

Vector:

Weaknesses

CWE ID	Type	Source
CWE-770	Secondary	security-officer@isc.org

CWE ID: CWE-770

Type: Secondary

Source: security-officer@isc.org

References

Hyperlink	Source	Resource
https://downloads.isc.org/isc/bind9/9.20.26	security-officer@isc.org	N/A
https://downloads.isc.org/isc/bind9/9.21.24	security-officer@isc.org	N/A
https://kb.isc.org/docs/cve-2026-11622	security-officer@isc.org	N/A