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CentOS Linux 6 [TuxCare] Security Update: ca-certificates (CENTOS6:CLSA-2026:1793112288)

medium Nessus Plugin ID 374558

Synopsis

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

Description

The CentOS Linux 6 host has a package installed that is affected by a vulnerability as referenced in the TuxCare CENTOS6:CLSA-2026:1793112288 advisory.

 - The system certificate authority (CA) store in Red Hat products, distributed via ca-certificates RPM packages, included multiple root CA certificates of authorities, which signed intermediate CA certificates with weak private keys issued by the eMudhra certificate authority. A man-in-the-middle attacker could use this flaw to issue certificates for arbitrary host names signed by the weak intermediate CA certificates, which would be considered trusted by a TLS/SSL client using system CA store and cause such clients to connect to malicious sites. Due to inability to only distrust specific intermediate certificates in all clients using the system CA store, root CA certificates of authorities that signed weak intermediate CA certificates are being removed. (CVE-2026-114406)

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 ca-certificates package based on the guidance in TuxCare advisory CENTOS6:CLSA-2026:1793112288.

See Also

https://cve.tuxcare.com/els/releases/CLSA-2026:1793112288

http://www.nessus.org/u?11a0aba7

Plugin Details

Severity: Medium

ID: 374558

File Name: tuxcare_centos_6_CLSA-2026-1793112288.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/31/2026

Updated: 10/31/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.53

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-114406

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

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

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: 10/27/2026

Vulnerability Publication Date: 10/21/2026

Reference Information

CVE: CVE-2026-114406

CLSA: 2026:1793112288