Detections
Analytics

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

high Tenable Cloud Security Plugin ID 465198

Description

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

 - 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.
 (CVE-2026-11622)

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-2026-11622

Plugin Details

Severity: High

ID: 465198

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.92

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-2026-11622

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: 7/23/2026

Vulnerability Publication Date: 7/22/2026

Reference Information

CVE: CVE-2026-11622

IAVA: 2026-A-0764-S