Description
FreeRDP before 3.32.2 allows a client assertion abort because rdpgfx_on_data_received rejects only negative zgfx_decompress status and passes the resulting null output pointer to Stream_StaticConstInit. A malicious RDP server can send a zero-output ZGFX payload on the RDPGFX channel after session activation to terminate the client.
Published: 2026-11-03
Score: 5.3 Medium
EPSS: n/a
KEV: No
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Remediation

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Advisories

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History

Tue, 03 Nov 2026 14:45:00 +0000

Type Values Removed Values Added
Description FreeRDP before 3.32.2 allows a client assertion abort because rdpgfx_on_data_received rejects only negative zgfx_decompress status and passes the resulting null output pointer to Stream_StaticConstInit. A malicious RDP server can send a zero-output ZGFX payload on the RDPGFX channel after session activation to terminate the client.
Title FreeRDP before 3.32.2 Client Denial of Service via Zero-Output ZGFX Payload
First Time appeared Freerdp
Freerdp freerdp
Weaknesses CWE-617
CPEs cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
Vendors & Products Freerdp
Freerdp freerdp
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}

Subscriptions

Freerdp Freerdp
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-03T14:28:07.384Z

Reserved: 2026-11-03T12:28:46.507Z

Link: CVE-2026-121406

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-03T15:17:29.240

Modified: 2026-11-03T15:17:29.370

Link: CVE-2026-121406

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses