Detections
Analytics
RHCOS 4 : OpenShift Container Platform 4.20.16 (RHSA-2026:3851)
medium Nessus Plugin ID 311516
Synopsis
The remote Red Hat CoreOS host is missing a security update for OpenShift Container Platform 4.20.16.Description
The remote Red Hat Enterprise Linux CoreOS 4 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:3851 advisory.- golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728)
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 OpenShift Container Platform 4.20.16 packages based on the guidance in RHSA-2026:3851.See Also
https://access.redhat.com/security/updates/classification/#moderate
https://bugzilla.redhat.com/show_bug.cgi?id=2434431
Plugin Details
Severity: Medium
ID: 311516
File Name: rhcos-RHSA-2026-3851.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: Medium
Score: 4.4
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.1
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2025-61728
CVSS v3
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.9
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:podman-plugins, p-cpe:/a:redhat:enterprise_linux:podman-tests, cpe:/o:redhat:enterprise_linux:9:coreos, p-cpe:/a:redhat:enterprise_linux:podman-docker, p-cpe:/a:redhat:enterprise_linux:podman-remote, p-cpe:/a:redhat:enterprise_linux:podman
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: 3/11/2026
Vulnerability Publication Date: 1/22/2026
Reference Information
CVE: CVE-2025-61728