CVE-2026-91952

FreeRDP versions before 3.31.0 contain an infinite-loop denial of service in the pool_decode_rect function when decoding AVC444 metablocks with more region rectangles than preallocated worker array size. A malicious RDP server can send crafted AVC444 graphics updates causing the threaded decode path to loop indefinitely, consuming CPU and preventing normal client operation.

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-m85m-3qxv-63h5	Exploit Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/freerdp-before-3.31.0-denial-of-service-via-pool-decode-rect	Third Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-m85m-3qxv-63h5	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

24 Sep 2026, 12:15

Type	Values Removed	Values Added
CPE		cpe:2.3:a:freerdp:freerdp::::::::
References	~~() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-m85m-3qxv-63h5 -~~	() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-m85m-3qxv-63h5 - Exploit, Mitigation, Vendor Advisory
References	~~() https://www.vulncheck.com/advisories/freerdp-before-3.31.0-denial-of-service-via-pool-decode-rect -~~	() https://www.vulncheck.com/advisories/freerdp-before-3.31.0-denial-of-service-via-pool-decode-rect - Third Party Advisory
First Time		Freerdp freerdp Freerdp

17 Sep 2026, 15:16

Type	Values Removed	Values Added
References	~~() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-m85m-3qxv-63h5 -~~	() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-m85m-3qxv-63h5 -

Information

Published : 2026-09-15 16:17

Updated : 2026-09-24 12:15

NVD link : CVE-2026-91952

Mitre link : CVE-2026-91952

CVE.ORG link : CVE-2026-91952

JSON object : View

Products Affected

freerdp

freerdp

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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