Detections
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Echo: glibc: security update to 2.41-12+deb13u4+e2

medium Tenable Cloud Security Plugin ID 455182

Description

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

 - Initializing the DNS stub resolver from an /etc/resolv.conf file, or a LOCALDOMAIN environment variable,
 whose search list contains a domain of roughly 200 characters or more in the GNU C Library version 2.26 to
 2.44 results in an assertion failure which aborts the process. The resolver truncates the search list when
 copying it into the fixed-size _res.defdname buffer, then asserts that the copy is consistent with the
 full configuration. The consistency check compared against the wrong size and did not handle a first entry
 that does not fit, so a correctly truncated list failed the assertion. Any process that resolves names
 through the library is affected, including long-running processes that reload /etc/resolv.conf on the next
 query after it changes. Search domains are commonly written to /etc/resolv.conf from data received over
 DHCP or from a VPN server, so an attacker on the local network may be able to trigger this without
 privileges on the target system, subject to validation by the network configuration software.
 (CVE-2026-8674)

Solution

Update the glibc library and its related packages to version 2.41-12+deb13u4+e2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-8674

Plugin Details

Severity: Medium

ID: 455182

Version: Revision 1.2

Type: Local

Published: 10/1/2026

Updated: 10/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.65

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2026-8674

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:A/AC:H/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: 9/18/2026

Vulnerability Publication Date: 9/17/2026

Reference Information

CVE: CVE-2026-8674