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CVE-2026-109257 Details

Description

FreeRDP before 3.32.0 contains a double-free vulnerability in nsc_context_initialize_encode() that leaves dangling plane pointers after a partial buffer growth failure. Attackers using a crafted RDP client can negotiate NSCodec with a large desktop geometry to trigger allocation failure, crashing the server during context teardown.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CNA: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-2hhg-8xx6-v73w	CISA-ADP	ExploitVendor Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-2hhg-8xx6-v73w	[email protected]	ExploitVendor Advisory
https://www.vulncheck.com/advisories/freerdp-before-3.32.0-double-free-via-nscodec-plane-growth-failure	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-415	Double Free	[email protected]

Affected Products

Product	Versions
freerdp freerdp	3.31.0
CPE cpe:2.3:a:freerdp:freerdp:3.31.0:::::::* Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Oct 27, 2026	Initial Analysis	[email protected]
Oct 15, 2026	CVE Modified	CISA-ADP
Oct 12, 2026	New CVE Received	[email protected]