CVE-2026-51082 Race condition in n/a
An attacker with vncproxy privileges can hijack another user's VNC session via a race condition, allowing unauthorized access to virtual machine displays.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-51082?
CVE-2026-51082 is a high-severity vulnerability in n/a, published on 17 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
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.
Weakness: CWE-362
Which versions are affected by CVE-2026-51082?
How do I fix CVE-2026-51082?
No fix has been published for CVE-2026-51082 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-51082 being exploited?
There is no known exploitation of CVE-2026-51082 in the wild and no public exploit code.
Sources
Also known as GHSA-vjf4-fxgw-f2mh.