🛡️ CVE-2023-43090 — fedora

🟡 CVSS 5.5 — Medium ⚠️ Exploit Public CWE-862 NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A vulnerability was found in GNOME Shell. GNOME Shell's lock screen allows an unauthenticated local user to view windows of the locked desktop session by using keyboard shortcuts to unlock the restricted functionality of the screenshot tool.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

Weakness class

CVE-2023-43090 is classified as CWE-862: Missing Authorization. No authorisation check is performed before carrying out a restricted action.

Affected software

CVE-2023-43090 is recorded against 2 packages.

  • fedora
  • gnome-shell

Timeline and source

Published on 22 September 2023 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from NVD.

References

access.redhat.com
bugzilla.redhat.com
gitlab.gnome.org
gitlab.gnome.org
access.redhat.com
bugzilla.redhat.com
gitlab.gnome.org
gitlab.gnome.org

CVE-2023-43090 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE CWE-862
Public Exploit ⚠️ Yes
Source NVD
Published 2023-09-22
Updated 2026-08-11
Modified 2026-06-17

Affected Packages

Software From version Fixed in
fedora
gnome-shell

Similar Threats

Exploit Protection

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CVE-2023-43090 carries CVSS 5.5 Medium rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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