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CVE-2023-43090

Gnome-shell: screenshot tool allows viewing open windows when session is locked

MEDIUM
5.5
CVSS Score
Published: September 22, 2023 at 05:02 AM UTC
Updated: June 17, 2026 at 06:25 AM UTC
2 products affected across 2 vendorsFedoraGnome Shell

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Fedora· Fedora Projectrpm
95%
3738
Gnome Shell· Gnome
95%
43 ≤ v < 43.944 ≤ v < 44.542
Affected range stops below 43.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 44.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

VDB Entryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/security/cve/CVE-2023-43090
Issue Trackingx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2239087
ExploitIssue TrackingPatchVendor Advisory
Source: [email protected]
https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/6990
PatchVendor Advisory
Source: [email protected]
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2944

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMfedora
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfoCWE-862

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