CVE-2026-109942

FreeRDP 2.3.0 before 3.32.0 dereferences a NULL stream in rdgprocessclosepacket in libfreerdp/core/gateway/rdg.c because rdgprocesscontrolpacket accepts a header-only PKTTYPECLOSECHANNEL packet and passes the null payload without a check. A malicious or compromised RD Gateway can send an eight-by...

CVE-2026-109944

FreeRDP 3.0.0 before 3.32.0 does not remove card handles when EmulateSCardReleaseContext releases a smartcard-emulation context, so EmulateSCardTransmit later looks up the deleted parent context and reaches a terminating WINPRASSERT. A malicious RDP server can crash a connecting client with...

CVE-2026-109943

FreeRDP 3.29.0 before 3.32.0 contains a double free in the client's async-update message proxy, which shallow-copies the parser-owned PolygonSC or PolygonCB points array when numPoints is zero, so both the queue consumer and parser cleanup free it. A malicious RDP server can send a point-bearing...

CVE-2026-109945

FreeRDP 3.0.0 before 3.32.0 contains a heap use-after-free vulnerability in smartcard emulation when SCARDIOCTLDISCONNECT and SCARDIOCTLTRANSMIT operate concurrently on one card handle. A malicious RDP server can overlap these IRPs through separate context workers to free and reuse the SCardHandl...

CVE-2026-109946

FreeRDP 3.11.0 before 3.32.0 does not validate that AVC444 and AVC444v2 region widths are even before YUV444 conversion, so an odd width reaches an assertion and aborts the client. A malicious or compromised RDP server can terminate a connected FreeRDP client after RDPGFX AVC444 negotiation by...

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 IRPMJREAD with Length 0xffffffff, causing roughly 4 GiB of zeroed allocation on...

DEBIAN-CVE-2026-109938

Positive mapped-video coordinates overflow and abort FreeRDP clients A malicious or compromised RDP server can terminate a FreeRDP client after the user connects with video redirection enabled...

DEBIAN-CVE-2026-109939

FreeRDP 3.27.1 before 3.32.0 contains a NULL pointer dereference in updatereadcachebitmapv3order in libfreerdp/core/orders.c, which accesses the client bitmap cache when the CBR3DONOTCACHE flag is set, even though the cache is not yet initialized before Demand Active. A malicious or compromised R...

DEBIAN-CVE-2026-109940

FreeRDP 3.0.0-beta1 before 3.32.0 on Unix builds with PKCS11 support has a stack-based buffer overflow in wprintKeyName in WinPR's NCrypt PKCS11 provider. It hex-encodes a key's CKAID, which can be up to 64 bytes, into a fixed 128-byte stack buffer. An attacker supplying a malicious PKCS11 token ...

DEBIAN-CVE-2026-109679

FreeRDP 3.0.0-beta4 before 3.32.0 contains a NULL pointer dereference in armhandlerequestok when an ARM endpoint returns an empty HTTP 200 body. Attackers controlling the configured ARM gateway can return a zero-length body to pass NULL to strnlen and crash the connecting client...

DEBIAN-CVE-2026-109678

FreeRDP 3.0.0-beta1 before 3.32.0, when built with verbose WinPR assertions and using smartcard emulation, has a reachable assertion: the emulated SCardStatusA passes a NULL reader-name destination to scardcopystrings. A malicious RDP server can send an SCardStatusA request with...

DEBIAN-CVE-2026-109680

FreeRDP 3.18.0 before 3.32.0 has a heap-based out-of-bounds write in freerdpinterruptiblegetline, which shrinks the buffer to 32 bytes while keeping a pre-filled suggested username's length as its write offset. A malicious or compromised ARM routing service can return a long redirectedUsername th...

CVE-2026-109939

FreeRDP 3.27.1 before 3.32.0 contains a NULL pointer dereference in updatereadcachebitmapv3order in libfreerdp/core/orders.c, which accesses the client bitmap cache when the CBR3DONOTCACHE flag is set, even though the cache is not yet initialized before Demand Active. A malicious or compromised R...

CVE-2026-109680

FreeRDP 3.18.0 before 3.32.0 has a heap-based out-of-bounds write in freerdpinterruptiblegetline, which shrinks the buffer to 32 bytes while keeping a pre-filled suggested username's length as its write offset. A malicious or compromised ARM routing service can return a long redirectedUsername th...

CVE-2026-109678

FreeRDP 3.0.0-beta1 before 3.32.0, when built with verbose WinPR assertions and using smartcard emulation, has a reachable assertion: the emulated SCardStatusA passes a NULL reader-name destination to scardcopystrings. A malicious RDP server can send an SCardStatusA request with...

CVE-2026-109679

FreeRDP 3.0.0-beta4 before 3.32.0 contains a NULL pointer dereference in armhandlerequestok when an ARM endpoint returns an empty HTTP 200 body. Attackers controlling the configured ARM gateway can return a zero-length body to pass NULL to strnlen and crash the connecting client...

CVE-2026-109938

Positive mapped-video coordinates overflow and abort FreeRDP clients A malicious or compromised RDP server can terminate a FreeRDP client after the user connects with video redirection enabled...

CVE-2026-109940

FreeRDP 3.0.0-beta1 before 3.32.0 on Unix builds with PKCS11 support has a stack-based buffer overflow in wprintKeyName in WinPR's NCrypt PKCS11 provider. It hex-encodes a key's CKAID, which can be up to 64 bytes, into a fixed 128-byte stack buffer. An attacker supplying a malicious PKCS11 token ...

DEBIAN-CVE-2026-109676

FreeRDP from 3.0.0-beta1 before 3.32.0 contains a use-after-free vulnerability in smartcard handling that allows attackers to access a freed smartcard handle object after an invalid connect operation. Attackers can trigger an invalid smartcard connect operation to cause reuse of the freed handle,...

DEBIAN-CVE-2026-109677

FreeRDP from 2.0.0-beta1 before 3.28.0 contains an out-of-bounds read vulnerability in smartcardLocateCardsByATRACall because the ATR pattern cbAtr byte count is not capped. Malicious RDP servers can send crafted ATR mask arrays to use query timing as an oracle, leaking heap memory bit-by-bit to...