AUGUST 4, 2026
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Case File

CVE-2023-3354

HIGH · CVSS 7.5 EPSS 1.61%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2023-07-11 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. It may be remotely exploitable. It may lead to a denial-of-service condition.

CVE
CVE-2023-3354
Severity
HIGH
CVSS
7.5
EPSS
1.61%

Original NVD Description

A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service.

Related CVEs

Other vulnerabilities affecting the same vendor(s)