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
Product
Action
Vendor
Proxmox
Product
Pve-container
Proxmox
Pve-container
Vendor
Proxmox
Product
Pve-manager
Proxmox
Pve-manager
Vendor
Qemu
Product
Qemu
Qemu
Qemu
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
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
