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Echo: bind9: security update to 1:9.20.26-1~deb13u1

medium Tenable Self-Hosted Container Security Plugin ID 463570

Description

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

 - If BIND encounters a particular invalid data structure in a DNS record, it will accept the invalid data,
 and may subsequently abort and exit. BIND will first need to store a DNS record for a key (KEY, DNSKEY,
 etc.). That key must specify a PRIVATEDNS algorithm (253), and in the algorithm identifier, improperly
 give a length longer than the actual identifier data. The invalid identifier will be stored. If BIND later
 needs to render that record to text, it will use the invalid length during processing, leading to a
 consistency check failing. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through
 9.20.24, 9.21.0 through 9.21.23, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
 (CVE-2026-10822)

Solution

Update the bind9 library and its related packages to version 1:9.20.26-1~deb13u1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-10822

Plugin Details

Severity: Medium

ID: 463570

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.74

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-2026-10822

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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: 7/23/2026

Vulnerability Publication Date: 7/22/2026

Reference Information

CVE: CVE-2026-10822

IAVA: 2026-A-0764-S