CVE-2026-109947

FreeRDP from 3.20.1 before 3.32.0 contains an uncontrolled resource allocation vulnerability that allows malicious RDP servers to exhaust client memory via oversized drive redirection read requests. Attackers can send IRP_MJ_READ with Length 0xffffffff, causing roughly 4 GiB of zeroed allocation on 64-bit builds or an under-reserved buffer on 32-bit builds.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q56j-jjh6-38jf	Exploit Vendor Advisory
https://www.vulncheck.com/advisories/freerdp-3.20.1-before-3.32.0-unbounded-allocation-via-drive-process-irp-read	Third Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q56j-jjh6-38jf	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

21 Oct 2026, 15:01

Type	Values Removed	Values Added
CPE		cpe:2.3:a:freerdp:freerdp::::::::
First Time		Freerdp Freerdp freerdp
References	~~() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q56j-jjh6-38jf -~~	() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q56j-jjh6-38jf - Exploit, Vendor Advisory
References	~~() https://www.vulncheck.com/advisories/freerdp-3.20.1-before-3.32.0-unbounded-allocation-via-drive-process-irp-read -~~	() https://www.vulncheck.com/advisories/freerdp-3.20.1-before-3.32.0-unbounded-allocation-via-drive-process-irp-read - Third Party Advisory

16 Oct 2026, 22:17

Type	Values Removed	Values Added
References	~~() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q56j-jjh6-38jf -~~	() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-q56j-jjh6-38jf -

13 Oct 2026, 14:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-13 14:17

Updated : 2026-10-21 15:01

NVD link : CVE-2026-109947

Mitre link : CVE-2026-109947

CVE.ORG link : CVE-2026-109947

JSON object : View

Products Affected

freerdp

freerdp

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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