🛡️ CVE-2023-6683
🟡 CVSS 6.5 — Medium ✅ No Known Exploit CWE-476 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a malicious authenticated VNC client to crash QEMU and trigger a denial of service.

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE CWE-476
Public Exploit ✅ No
Source NVD
Published 2024-01-12
Updated 2026-06-08
Modified 2025-05-02

Affected Packages

Software From version Fixed in
enterprise-linux
qemu 6.1.0 8.2.2

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