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Vulnerability · Published Oct 20, 2026 · Assigned by redhat

CVE-2026-113496Cockpit-machines: cockpit-appstream: vnc console password disclosure through virt-xml command-line arguments

Medium 5.0

In plain English

A medium-severity security flaw in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.0Medium
Exploit odds (30 days)0.1%top 96.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12cockpit-machinesno fix listedDEBIAN-CVE-2026-113496
Debian:13cockpit-machinesno fix listedDEBIAN-CVE-2026-113496
Debian:14cockpit-machines360-1DEBIAN-CVE-2026-113496
Ubuntu:22.04:LTScockpit-machinesno fix listedUBUNTU-CVE-2026-113496
Ubuntu:24.04:LTScockpit-machinesno fix listedUBUNTU-CVE-2026-113496
Ubuntu:26.04:LTScockpit-machinesno fix listedUBUNTU-CVE-2026-113496
Ubuntu:26.10cockpit-machinesno fix listedUBUNTU-CVE-2026-113496

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references

Weakness: CWE-214 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

References