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Fencer Intel
medium 5.0

CVE-2026-113496 json

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

published 20d ago modified 4d ago also EUVD-2026-104960

cvss
5.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits
0
none known

Summary

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.

Patch / fix

  • cockpit-machines Debian 14 360-1

debian advisories DEBIAN-CVE-2026-113496

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-113496 updated cvss 5.0

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

  • Red Hat Enterprise Linux 8 cockpit-pcp, cockpit-machines, cockpit-storaged, cockpit-dashboard, cockpit-packagekit
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux 9 cockpit-machines, cockpit-machines 355.1-1.el10_3 Red Hat Enterprise Linux 10 cockpit-machines 355.1-1.el10_3
    affected: workaround, no fix available

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
20d ago

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 5.0 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-214 Invocation of Process Using Visible Sensitive Information

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.