Detections
Analytics

CentOS Linux 7 [TuxCare] Security Update: gawk (CENTOS7:CLSA-2026:1784303038)

medium Nessus Plugin ID 362240

Synopsis

The CentOS Linux host is missing one or more security updates.

Description

The CentOS Linux 7 host has a package installed that is affected by a vulnerability as referenced in the TuxCare CENTOS7:CLSA-2026:1784303038 advisory.

 - Integer overflow vulnerability has been found in builtin.c program file of gawk (do_sub() routine). This issue could be used to overwrite gawk heap metadata and objects causing the program to crash. It affects 32-bit builds of gawk in versions 5.4.0 and below. (CVE-2026-40469)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected gawk package based on the guidance in TuxCare advisory CENTOS7:CLSA-2026:1784303038.

See Also

https://cve.tuxcare.com/els/releases/CLSA-2026:1784303038

http://www.nessus.org/u?a500cdbd

Plugin Details

Severity: Medium

ID: 362240

File Name: tuxcare_centos_7_CLSA-2026-1784303038.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/1/2026

Updated: 10/1/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.45

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

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

CVSS Score Source: CVE-2026-40469

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

CVSS v4

Risk Factor: Medium

Base Score: 5.1

Threat Score: 1.2

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list, Host/OS/extended-third-party

Exploit Ease: No known exploits are available

Patch Publication Date: 7/17/2026

Vulnerability Publication Date: 7/13/2026

Reference Information

CVE: CVE-2026-40469

CLSA: 2026:1784303038