CVE-2026-91952
FreeRDP before 3.31.0 Denial of Service via pool_decode_rect
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-835 |
| Vendor | freerdp |
| Product | freerdp |
| Published | Sep 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
FreeRDP / FreeRDP
0 < 3.31.0