ByteOS Network

NVD Vulnerability Details :

CVE-2026-5950

Awaiting Analysis

Source-security-officer@isc.org

Published At-20 May, 2026 | 13:16

Updated At-20 May, 2026 | 14:04

An unbounded resend loop vulnerability exists in the BIND 9 resolver state machine during bad-server handling, enabling a remote unauthenticated attacker to cause severe resource exhaustion by sending queries that trigger specific retry conditions. This issue affects BIND 9 versions 9.18.36 through 9.18.48, 9.20.8 through 9.20.22, 9.21.7 through 9.21.21, 9.18.36-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Primary	3.1	5.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Type: Primary

Version: 3.1

Base score: 5.3

Base severity: MEDIUM

Vector:

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

Weaknesses

CWE ID	Type	Source
CWE-606	Secondary	security-officer@isc.org

CWE ID: CWE-606

Type: Secondary

Source: security-officer@isc.org

References

Hyperlink	Source	Resource
https://downloads.isc.org/isc/bind9/9.18.49	security-officer@isc.org	N/A
https://downloads.isc.org/isc/bind9/9.20.23	security-officer@isc.org	N/A
https://downloads.isc.org/isc/bind9/9.21.22	security-officer@isc.org	N/A
https://kb.isc.org/docs/cve-2026-5950	security-officer@isc.org	N/A