Detections
Analytics
RHCOS 4 : OpenShift Container Platform 4.17.50 (RHSA-2026:3416)
high Nessus Plugin ID 311509
Synopsis
The remote Red Hat CoreOS host is missing one or more security updates for OpenShift Container Platform 4.17.50.Description
The remote Red Hat Enterprise Linux CoreOS 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:3416 advisory.- runc: opencontainers/selinux: container escape and denial of service due to arbitrary write gadgets and procfs write redirects (CVE-2025-52881)
- golang: net/url: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the RHCOS OpenShift Container Platform 4.17.50 packages based on the guidance in RHSA-2026:3416.See Also
https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2404715
https://bugzilla.redhat.com/show_bug.cgi?id=2434432
Plugin Details
Severity: High
ID: 311509
File Name: rhcos-RHSA-2026-3416.nasl
Version: 1.1
Type: Local
Agent: unix
Family: Red Hat Local Security Checks
Published: 5/2/2026
Updated: 5/2/2026
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Critical
Score: 9.2
Vendor
Vendor Severity: Important
CVSS v2
Risk Factor: Medium
Base Score: 6
Temporal Score: 4.7
Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2025-52881
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.7
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS v4
Risk Factor: High
Base Score: 7.3
Threat Score: 5.9
Threat Vector: CVSS:4.0/E:P
Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:containernetworking-plugins, p-cpe:/a:redhat:enterprise_linux:runc, cpe:/o:redhat:enterprise_linux:9:coreos, p-cpe:/a:redhat:enterprise_linux:skopeo-tests, p-cpe:/a:redhat:enterprise_linux:buildah-tests, p-cpe:/a:redhat:enterprise_linux:skopeo, cpe:/o:redhat:enterprise_linux:8:coreos, p-cpe:/a:redhat:enterprise_linux:buildah
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 3/4/2026
Vulnerability Publication Date: 11/5/2025
Reference Information
CVE: CVE-2025-52881, CVE-2025-61726