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CVE-2026-113496medium5.0

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

Impact

A flaw in cockpit-machines exposes the VNC console password as a command-line argument, allowing a local unprivileged attacker to read it from the process list. The affected products include Red Hat Enterprise Linux 8, 9, and 10. A local attacker could use this to access the guest virtual machine's graphical console.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

What to do

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.

redhat guidance

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Red Hat · redhat

Red Hat Enterprise Linux 10

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redhat version evidence

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affected

unaffected

unknown

Other versions: affected

Product identifiers (CPE)cpe:/o:redhat:enterprise_linux:10

Red Hat · redhat

Red Hat Enterprise Linux 8

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redhat version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

unaffected

unknown

Other versions: affected

Product identifiers (CPE)cpe:/o:redhat:enterprise_linux:8

Red Hat · redhat

Red Hat Enterprise Linux 9

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redhat version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

unaffected

unknown

Other versions: affected

Product identifiers (CPE)cpe:/o:redhat:enterprise_linux:9

Original source 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.

Inside the record

Evidence available

Package identity · not supplied
Version evidence · not supplied
Remediation guidance
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-113496

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-214 ↗

Invocation of Process Using Visible Sensitive Information

redhat

Related →
Contributing organizations · 2
redhat

Assigning organization

2026-10-30
CISA-ADP

Additional data publisher

2026-10-20

What changed

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References

2 sources
access.redhat.com/security/cve/CVE-2026-113496
vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi
issue-trackingredhat