Detections
Analytics

Echo: bind9: security update to 1:9.20.23-1~deb13u1

high Tenable Self-Hosted Container Security Plugin ID 458508

Description

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

 - Multiple flaws have been identified in `named` related to the handling of DNS messages whose CLASS is not
 Internet (`IN`) — for example, `CHAOS` or `HESIOD`, or DNS messages that specify meta-classes (`ANY` or
 `NONE`) in the question section. Specially crafted requests reaching the affected code paths — recursion,
 dynamic updates (`UPDATE`), zone change notifications (`NOTIFY`), or processing of `IN`-specific record
 types in non-`IN` data — can cause assertion failures in `named`. This issue affects BIND 9 versions
 9.11.0 through 9.16.50, 9.18.0 through 9.18.48, 9.20.0 through 9.20.22, 9.21.0 through 9.21.21, 9.11.3-S1
 through 9.16.50-S1, 9.18.11-S1 through 9.18.48-S1, and 9.20.9-S1 through 9.20.22-S1. (CVE-2026-5946)

Solution

Update the bind9 library and its related packages to version 1:9.20.23-1~deb13u1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-5946

Plugin Details

Severity: High

ID: 458508

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.59

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-2026-5946

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: 5/21/2026

Vulnerability Publication Date: 5/20/2026

Reference Information

CVE: CVE-2026-5946

IAVA: 2026-A-0498-S