CVE-2026-109257

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.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-2hhg-8xx6-v73w	Exploit Vendor Advisory
https://www.vulncheck.com/advisories/freerdp-before-3.32.0-double-free-via-nscodec-plane-growth-failure	Third Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-2hhg-8xx6-v73w	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:freerdp:freerdp:3.31.0:*:*:*:*:*:*:*

History

27 Oct 2026, 18:56

Type	Values Removed	Values Added
CPE		cpe:2.3:a:freerdp:freerdp:3.31.0:::::::*
First Time		Freerdp Freerdp freerdp
References	~~() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-2hhg-8xx6-v73w -~~	() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-2hhg-8xx6-v73w - Exploit, Vendor Advisory
References	~~() https://www.vulncheck.com/advisories/freerdp-before-3.32.0-double-free-via-nscodec-plane-growth-failure -~~	() https://www.vulncheck.com/advisories/freerdp-before-3.32.0-double-free-via-nscodec-plane-growth-failure - Third Party Advisory

15 Oct 2026, 03:17

Type	Values Removed	Values Added
References	~~() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-2hhg-8xx6-v73w -~~	() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-2hhg-8xx6-v73w -

12 Oct 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-12 17:17

Updated : 2026-10-27 18:56

NVD link : CVE-2026-109257

Mitre link : CVE-2026-109257

CVE.ORG link : CVE-2026-109257

JSON object : View

Products Affected

freerdp

freerdp

CWE

CWE-415

Double Free

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