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Critical, CVSS 9.0amended

TigerVNC accessible via the network and not just via a UNIX socket as intended

CVE-2025-32428GHSA-vrq4-9hc3-cgp7

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (jupyter-remote-desktop-proxy 3.0.1), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
9.0 · CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H · score source
EPSS
  • CVE-2025-32428: 0.92% estimated exploitation activity in the next 30 days; percentile 60.24 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Summary `jupyter-remote-desktop-proxy` was meant to rely on UNIX sockets readable only by the current user since version 3.0.0, but when used with TigerVNC, the VNC server started by `jupyter-remote-desktop-proxy` were still accessible via the network. This vulnerability does not affect users having TurboVNC as the `vncserver` executable.

Credits This vulnerability was identified by Arne Gottwald at University of Göttingen and analyzed, reported, and reviewed by @frejanordsiek.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 5 · amended ·

    Amended from osv record GHSA-vrq4-9hc3-cgp7

  2. Revision 4 · amended ·

    Amended from ghsa record GHSA-vrq4-9hc3-cgp7

  3. Revision 3 · amended ·

    Amended from ghsa record GHSA-vrq4-9hc3-cgp7

  4. Revision 2 · amended ·

    Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

  5. Revision 1 · created ·

    Published from osv record GHSA-vrq4-9hc3-cgp7

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2025-32428

Advisory: TigerVNC accessible via the network and not just via a UNIX socket as intended
IDs: CVE-2025-32428, GHSA-vrq4-9hc3-cgp7
Record: https://patchnext.com/advisories/cve-2025-32428 (revision 5, source checked 28 Oct 2026, 06:05 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.0)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: jupyter-remote-desktop-proxy 3.0.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI jupyter-remote-desktop-proxy: affected >= 3.0.0, < 3.0.1; fixed in 3.0.1

## Suggested inspection (read-only)
- `python -m pip show jupyter-remote-desktop-proxy`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on jupyter-remote-desktop-proxy.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-vrq4-9hc3-cgp7 (OSV record GHSA-vrq4-9hc3-cgp7 lists affected ranges: PyPI jupyter-remote-desktop-proxy >=3.0.0 <3.0.1 (fixed))
- Verified: https://github.com/advisories/GHSA-vrq4-9hc3-cgp7 (GitHub-reviewed advisory GHSA-vrq4-9hc3-cgp7 lists affected ranges: PyPI jupyter-remote-desktop-proxy >=3.0.0 <=3.0.0)

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