CVE-2026-113496

Cockpit-machines: cockpit-appstream: vnc console password disclosure through virt-xml command-line arguments

Published Oct 20, 2026 CVSS 3.1 · 5 Medium EPSS < 1% KEV · Not listed
Description
A flaw was found in cockpit-machines. When saving Virtual Network Computing (VNC) console settings, the configured password is passed directly as a command-line argument to an underlying system utility. A local unprivileged attacker on a host that allows cross-user process inspection could read the exposed password from the process list while another user modifies settings. This credential disclosure can allow unauthorized access to the guest virtual machine's graphical console.

Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
cpe:/a:redhat:enterprise_linux:10
cpe:/a:redhat:enterprise_linux:8
cpe:/a:redhat:enterprise_linux:9
Type Values Removed Values Added
Title Cockpit-machines: vnc console password disclosure through virt-xml command-line arguments Cockpit-machines: cockpit-appstream: vnc console password disclosure through virt-xml command-line arguments
CPEs cpe:/o:redhat:enterprise_linux:8
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A flaw was found in cockpit-machines. When saving Virtual Network Computing (VNC) console settings, the configured password is passed directly as a command-line argument to an underlying system utility. A local unprivileged attacker on a host that allows cross-user process inspection could read the exposed password from the process list while another user modifies settings. This credential disclosure can allow unauthorized access to the guest virtual machine's graphical console.
Title Cockpit-machines: vnc console password disclosure through virt-xml command-line arguments
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-214
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics threat_severity

None

cvssV3_1

{'score': 5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N'}

threat_severity

Moderate

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Nov 5, 2026, 4:29 PM
Reserved
Oct 20, 2026, 9:12 AM
Status
Awaiting Analysis
Published
Oct 20, 2026, 12:17 PM
Modified
Nov 5, 2026, 5:17 PM
Severity
Moderate
Public date
Oct 20, 2026, 9:17 AM