Detections
Analytics

Echo: io.netty:netty-resolver-dns: security update to 4.1.135.Final

medium Tenable Self-Hosted Container Security Plugin ID 464639

Description

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

 - Netty is a network application framework for development of protocol servers and clients. Prior to
 versions 4.1.135.Final and 4.2.15.Final, Netty's DNS resolver uses a predictable PRNG for generating DNS
 transaction IDs and defaults to a static UDP source port. This combination reduces the entropy of DNS
 queries, enabling DNS Cache Poisoning (Kaminsky attack). Versions 4.1.135.Final and 4.2.15.Final patch the
 issue. (CVE-2026-45673)

Solution

Update the io.netty:netty-resolver-dns library and its related packages to version 4.1.135.Final or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-45673

Plugin Details

Severity: Medium

ID: 464639

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3.3

Percentile: 51.22

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4

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

CVSS Score Source: CVE-2026-45673

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2026

Vulnerability Publication Date: 6/8/2026

Reference Information

CVE: CVE-2026-45673