Detections
Analytics
RHCOS 4 : Red Hat build of MicroShift 4.22.20 (RHSA-2026:89817)
medium Nessus Plugin ID 373582
Language:
Synopsis
The remote Red Hat CoreOS host is missing a security update for Red Hat build of MicroShift 4.22.20.Description
The remote Red Hat Enterprise Linux CoreOS 4 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:89817 advisory.- crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943)
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 RHCOS Red Hat build of MicroShift 4.22.20 package based on the guidance in RHSA-2026:89817.See Also
https://access.redhat.com/errata/RHSA-2026:89817
https://access.redhat.com/security/updates/classification/#important
Plugin Details
Severity: Medium
ID: 373582
File Name: rhcos-RHSA-2026-89817.nasl
Version: 1.1
Type: Local
Agent: unix
Family: Red Hat Local Security Checks
Published: 10/29/2026
Updated: 10/29/2026
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.3
Percentile: 98.16
Vendor
Vendor Severity: Important
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-2026-111943
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
CPE: cpe:/o:redhat:enterprise_linux:9:coreos, p-cpe:/a:redhat:enterprise_linux:microshift-ai-model-serving-release-info, p-cpe:/a:redhat:enterprise_linux:microshift-ai-model-serving, p-cpe:/a:redhat:enterprise_linux:microshift-cert-manager-release-info, p-cpe:/a:redhat:enterprise_linux:microshift-cert-manager, p-cpe:/a:redhat:enterprise_linux:microshift-gateway-api-release-info, p-cpe:/a:redhat:enterprise_linux:microshift-gateway-api, p-cpe:/a:redhat:enterprise_linux:microshift-greenboot, p-cpe:/a:redhat:enterprise_linux:microshift-low-latency, p-cpe:/a:redhat:enterprise_linux:microshift-multus-release-info, p-cpe:/a:redhat:enterprise_linux:microshift-multus, p-cpe:/a:redhat:enterprise_linux:microshift-networking, p-cpe:/a:redhat:enterprise_linux:microshift-observability, p-cpe:/a:redhat:enterprise_linux:microshift-olm-release-info, p-cpe:/a:redhat:enterprise_linux:microshift-olm, p-cpe:/a:redhat:enterprise_linux:microshift-release-info, p-cpe:/a:redhat:enterprise_linux:microshift-selinux, p-cpe:/a:redhat:enterprise_linux:microshift-sriov-release-info, p-cpe:/a:redhat:enterprise_linux:microshift-sriov, p-cpe:/a:redhat:enterprise_linux:microshift
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 10/26/2026
Vulnerability Publication Date: 10/20/2026
Reference Information
CVE: CVE-2026-111943
CWE: 295
RHSA: 2026:89817