CVE-2026-110829

FreeRDP versions from 3.0.0 before 3.32.0 contain a null pointer dereference in the rdpsnd channel when a fragment sets CHANNELFLAGLAST without CHANNELFLAGFIRST. A malicious RDP server can send a malformed rdpsnd PDU on a fresh channel to crash the client and cause denial of service...

CVE-2026-110829 FreeRDP 3.0.0 before 3.32.0 Null Pointer Dereference via rdpsnd Fragment

FreeRDP versions from 3.0.0 before 3.32.0 contain a null pointer dereference in the rdpsnd channel when a fragment sets CHANNELFLAGLAST without CHANNELFLAGFIRST. A malicious RDP server can send a malformed rdpsnd PDU on a fresh channel to crash the client and cause denial of service...

CVE-2026-110829

FreeRDP versions from 3.0.0 before 3.32.0 contain a null pointer dereference in the rdpsnd channel when a fragment sets CHANNELFLAGLAST without CHANNELFLAGFIRST. A malicious RDP server can send a malformed rdpsnd PDU on a fresh channel to crash the client and cause denial of service...

CVE-2026-110829

FreeRDP versions 3.0.0 through 3.31.x are vulnerable to a null pointer dereference within the rdpsnd channel . The root cause is triggered when a fragment sets the CHANNEL_FLAG_LAST flag without the CHANNEL_FLAG_FIRST flag. A malicious RDP server can exploit this by sending a malformed rdpsnd PDU...

CVE-2026-110829 FreeRDP 3.0.0 before 3.32.0 Null Pointer Dereference via rdpsnd Fragment

FreeRDP versions from 3.0.0 before 3.32.0 contain a null pointer dereference in the rdpsnd channel when a fragment sets CHANNELFLAGLAST without CHANNELFLAGFIRST. A malicious RDP server can send a malformed rdpsnd PDU on a fresh channel to crash the client and cause denial of service...

PT-2026-114147

FreeRDP from 3.0.0-beta1 before 3.32.0 fails to enforce cumulative or absolute size limits when reassembling RDPDR channel fragments in the proxy. Attackers can send a FIRST fragment followed by continuation fragments without LAST, growing per-session heap streams proportional to traffic and...

CVE-2026-110835: Improper Neutralization of CRLF Sequences

FreeRDP 3.0.0 before 3.32.0 allows HTTP header injection in its proxy because a lone LF in the target portion of a routing token Cookie: msts= is not rejected and is written by httpproxyconnect into the CONNECT request line and Host header. A remote unauthenticated RDP client connecting to a prox...

CVE-2026-110839: Out-of-bounds Write

FreeRDP 3.3.0 before 3.32.0, when built with WINPRUTILSIMAGEJPEG=ON, has a heap-based out-of-bounds write in winprconvertfromjpeg because grayscale JPEG buffers are sized from one input component rather than three BGR output components. A malicious RDP server can offer a grayscale JPEG via...

CVE-2026-110837: Heap-based Buffer Overflow

FreeRDP 2.0.0 before 3.32.0, when built with WITHLAME=ON and WITHDSPFFMPEG=OFF, has a heap-based buffer overflow in freerdpdspdecodemp3 because the right-channel PCM pointer is offset by a byte count treated as short elements. A malicious RDP server can send MP3 audio over rdpsnd so decoded sampl...

CVE-2026-110836: Loop with Unreachable Exit Condition

FreeRDP from 3.0.0 before 3.32.0 contains an infinite loop vulnerability in httpresponserecv that allows malicious gateways to exhaust client CPU via crafted Content-Type headers. Attackers controlling a gateway can return a nonzero Content-Length with a semicolon-containing unrecognized...

CVE-2026-110838: Missing Authentication for Critical Function

FreeRDP shadow server from 3.0.0 before 3.32.0 dispatches input PDUs during the Confirm Active state before authentication, allowing unauthenticated attackers to inject keyboard input. Attackers can negotiate TLS-only RDP and send an input PDU without Confirm Active to inject synthetic keystrokes...

CVE-2026-110829: NULL Pointer Dereference

FreeRDP versions from 3.0.0 before 3.32.0 contain a null pointer dereference in the rdpsnd channel when a fragment sets CHANNELFLAGLAST without CHANNELFLAGFIRST. A malicious RDP server can send a malformed rdpsnd PDU on a fresh channel to crash the client and cause denial of service...

CVE-2026-110834: NULL Pointer Dereference

FreeRDP from 2.0.0 before 3.32.0 contains a null pointer dereference vulnerability that allows malicious RDP servers to crash clients by sending out-of-lifecycle serial IRPs. Attackers can send IRPMJREAD or IRPMJWRITE before create or after close, causing CommReadFile or CommWriteFile to...

CVE-2026-110832: Uncontrolled Resource Consumption

FreeRDP from 2.0.0 before 3.32.0 contains a memory exhaustion vulnerability in wtsreaddrdynvcdatafirst that allows authenticated clients to force servers to commit large memory allocations. Attackers can send a seven-byte DATAFIRST message on an opened DVC declaring a large 32-bit length, causing...

CVE-2026-110831: Missing Release of File Descriptor or Handle after Effective Lifetime

FreeRDP versions 3.13.0 before 3.32.0 contain a resource retention flaw in driveprocessirpcreate, which registers an opened local file in the drive dictionary before applying the allocation size and does not remove it when that operation fails. A malicious RDP server connected to a client with...

CVE-2026-110830: Uncontrolled Resource Consumption

FreeRDP before 3.32.0 fails to close prior serial handles in serialprocessirpcreate, allowing a malicious RDP server to exhaust file descriptors. Attackers can send repeated serial IRPMJCREATE requests to accumulate descriptors and terminate the client at the CommReadFile FDSETSIZE assertion...

CVE-2026-110833: Uncontrolled Resource Consumption

FreeRDP from 3.0.0-beta1 before 3.32.0 fails to enforce cumulative or absolute size limits when reassembling RDPDR channel fragments in the proxy. Attackers can send a FIRST fragment followed by continuation fragments without LAST, growing per-session heap streams proportional to traffic and...

PT-2026-114153

FreeRDP 3.3.0 before 3.32.0, when built with WINPR UTILS IMAGE JPEG=ON, has a heap-based out-of-bounds write in winpr convert from jpeg because grayscale JPEG buffers are sized from one input component rather than three BGR output components. A malicious RDP server can offer a grayscale JPEG via...

PT-2026-114152

FreeRDP shadow server from 3.0.0 before 3.32.0 dispatches input PDUs during the Confirm Active state before authentication, allowing unauthenticated attackers to inject keyboard input. Attackers can negotiate TLS-only RDP and send an input PDU without Confirm Active to inject synthetic keystrokes...

PT-2026-114146

Name of the Vulnerable Software and Affected Versions FreeRDP versions 2.0.0 through 3.31.0 Description An issue exists in the wts read drdynvc data first function that allows authenticated clients to cause server resource exhaustion. By sending a seven-byte DATA FIRST message on an opened Dynami...