CVE-2026-19630

Published: Ott 21, 2026 Last Modified: Ott 21, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high

Description

AI Translation Available

In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional processing, with no limit imposed by BIND. A DNS message with a maliciously large number of such structures will cause BIND to consume disproportionate amounts of CPU time and memory during processing.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.

407

Inefficient Algorithmic Complexity

Incomplete
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: Low
View CWE Details
https://downloads.isc.org/isc/bind9/9.20.30
https://downloads.isc.org/isc/bind9/9.20.30
https://downloads.isc.org/isc/bind9/9.21.27
https://downloads.isc.org/isc/bind9/9.21.27
https://kb.isc.org/docs/cve-2026-19630
https://kb.isc.org/docs/cve-2026-19630