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CentOS Linux 7 [TuxCare] Security Update: rpcbind (CENTOS7:CLSA-2026:1793372385)

high Nessus Plugin ID 375673

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-2026:1793372385 advisory.

 - A flaw was found in rpcbind. This vulnerability allows a remote, unauthenticated attacker to cause a Denial of Service (DoS) by sending a large number of unique requests. The rpcbind service records previously unseen RPC (Remote Procedure Call) statistics in unbounded in-memory lists, leading to persistent memory growth and increased CPU usage. This can degrade or exhaust service availability.
 (CVE-2026-94640)

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 rpcbind package based on the guidance in TuxCare advisory CENTOS7:CLSA-2026:1793372385.

See Also

https://cve.tuxcare.com/els/releases/CLSA-2026:1793372385

http://www.nessus.org/u?86528a70

Plugin Details

Severity: High

ID: 375673

File Name: tuxcare_centos_7_CLSA-2026-1793372385.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 11/3/2026

Updated: 11/3/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.66

Vendor

Vendor Severity: Important

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-2026-94640

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

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: 10/30/2026

Vulnerability Publication Date: 9/22/2026

Reference Information

CVE: CVE-2026-94640

CLSA: 2026:1793372385