Description
FreeRDP 3.29.0 before 3.32.0 contains a double free in the client's async-update message proxy, which shallow-copies the parser-owned PolygonSC or PolygonCB points array when numPoints is zero, so both the queue consumer and parser cleanup free it. A malicious RDP server can send a point-bearing polygon order followed by a zero-point order to crash a client with +async-update enabled.
Published: 2026-10-13
Score: 7.1 High
EPSS: n/a
KEV: No
Impact: Denial of Service
Action: Patch Now
AI Analysis

Impact

FreeRDP 3.29.0 before 3.32.0 contains a double free in the client’s async‑update message proxy. The flaw is triggered when the client processes a polygon order that contains points followed by a zero‑point order. This double free can cause a crash of the RDP client, leading primarily to a denial of service. The vulnerability does not provide direct code execution or data exfiltration, but a malicious RDP server can exploit it to disrupt client availability.

Affected Systems

The affected product is the FreeRDP client. Versions 3.29.0 through 3.31.x are vulnerable. The vendors listed by the CNA are FreeRDP:FreeRDP. No additional product versions are disclosed.

Risk and Exploitability

The vulnerability has a CVSS score of 7.1, indicating high severity. The EPSS score is not available, and the flaw is not listed in the CISA KEV catalog. The exploit requires a malicious RDP server that can send the specific polygon order sequence; the attack does not require privileged local access or user interaction. Successful exploitation will cause a crash of the client, leading to denial of service.

Generated by OpenCVE AI on October 13, 2026 at 15:24 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade the FreeRDP client to version 3.32.0 or later.
  • If an upgrade is not possible, disable the async‑update feature on the client or avoid connecting to untrusted RDP servers.
  • Monitor RDP traffic for abnormal polygon orders as an interim mitigation until a patch is applied.

Generated by OpenCVE AI on October 13, 2026 at 15:24 UTC.

Tracking

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Advisories

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History

Tue, 13 Oct 2026 13:45:00 +0000

Type Values Removed Values Added
Description FreeRDP 3.29.0 before 3.32.0 contains a double free in the client's async-update message proxy, which shallow-copies the parser-owned PolygonSC or PolygonCB points array when numPoints is zero, so both the queue consumer and parser cleanup free it. A malicious RDP server can send a point-bearing polygon order followed by a zero-point order to crash a client with +async-update enabled.
Title FreeRDP 3.29.0 before 3.32.0 Double Free via Async-Update Polygon Order
First Time appeared Freerdp
Freerdp freerdp
Weaknesses CWE-415
CPEs cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
Vendors & Products Freerdp
Freerdp freerdp
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-13T13:27:11.928Z

Reserved: 2026-10-13T11:24:25.841Z

Link: CVE-2026-109943

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-13T14:17:32.377

Modified: 2026-10-13T14:17:32.377

Link: CVE-2026-109943

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-13T17:00:15Z

Weaknesses