CVE-2026-121404 (GCVE-0-2026-121404)

Vulnerability from cvelistv5 – Published: 2026-11-03 14:28 – Updated: 2026-11-03 18:30
VLAI
Title
FreeRDP before 3.32.2 Shadow Server CPU Exhaustion via Zero-Length DVC DATA
Summary
FreeRDP before 3.32.2 contains a denial of service vulnerability in the shadow server that allows authenticated RDP clients to spin server threads by sending zero-length drdynvc DATA PDUs. Attackers can send empty DATA messages on opened audin or rdpgfx channels, so that FreeRDP_WTSVirtualChannelRead never consumes them, consuming full CPU cores until disconnect.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-03 17:22 UTC
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7402 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
FreeRDP FreeRDP Affected: 0 , < 3.32.2 (semver)
Unaffected: 3.32.2 (semver)
    cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-19 00:00
Credits
Kushalkhemka mayank-jangid-moon skigeek16 opensec-intelligence
Show details on NVD website
To clipboard 

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