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    CVE-2026-51082

    A race condition between the vncproxy and vncwebsocket API calls in Proxmox Virtual Environment (PVE) 9.x pve-manager before 9.1.9 and 8.x before 8.4.19; qemu-server 9.x before 9.1.7 and 8.x before 8.4.7; and pve-container before 6.1.3 (PVE 9.x) and before 5.3.4 (PVE 8.x) allows an attacker with privileges to call "vncproxy" to hijack a VNC session that is established in parallel by a different user for a different VM.

    Published:Jul 17, 2026
    Last Modified:Jul 31, 2026
    EPS:Jul 17, 2026
    EPSS Score:0.00221
    CVSS Score:7.2

    Affected Products

    Vendor
    Proxmox
    Product
    Pve-container
    Vendor
    Proxmox
    Product
    Pve-manager
    Vendor
    Qemu
    Product
    Qemu

    Exploits

    No exploit reference

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High