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CVE-2026-51082

HIGH
7.2
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-51082
State
PUBLISHED
Assigner
mitre
Reserved
2026-06-07 00:00 UTC
Published
2026-07-17 00:00 UTC
Last updated
2026-07-17 16:44 UTC
Primary CWE
CWE-362
CWE-362 Concurrent Execution using Shared Resource with Impr…
Vendor / Product
n/a / n/a
Sources
cve.org  ·  NVD

Severity & Metrics

7.2 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
n/a n/a — n/a
Weakness (CWE)
CWESourceDescription
— cna n/a
CWE-362 adp CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSS scores (1)
ScoreSeverityVersionSourceVector
7.2 HIGH 3.1 adp CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
References (1)
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