Detections
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Echo: bind9: security update to 1:9.20.30-1~deb13u1

high Tenable Cloud Security Plugin ID 476607

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-19630)

Solution

Update the bind9 library and its related packages to version 1:9.20.30-1~deb13u1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-19630

Plugin Details

Severity: High

ID: 476607

Version: Revision 1.1

Type: Local

Published: 10/22/2026

Updated: 10/22/2026

Risk Information

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-19630

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/22/2026

Vulnerability Publication Date: 10/21/2026

Reference Information

CVE: CVE-2026-19630