CVE-2026-67301

FreeRDP before 3.29.0 contains out-of-bounds read vulnerabilities in the async update message proxy for the PolygonSC and PolygonCB primary drawing orders. When AsyncUpdate is enabled e.g., xfreerdp /async-update, updatemessagePolygonSC and updatemessagePolygonCB allocate a fresh points array but...

CVE-2026-67300

FreeRDP before 3.29.0 contains client-side heap use-after-free vulnerabilities in the async update message proxy for RAIL WINDOWSTATEORDER and NOTIFYICONSTATEORDER when AsyncUpdate is enabled. When a malicious or compromised RDP server sends crafted update orders, the message proxy shallow-copies...

CVE-2026-67299

FreeRDP before 3.29.0 is affected by a client-side heap use-after-free in the async update path when WINDOW_ICON_ORDER is processed. In update_message_WindowIcon(), a shallow CopyMemory overwrites a newly allocated lParam->iconInfo with a parser-owned windowIcon->iconInfo pointer; after the...

CVE-2026-67300

CVE-2026-67300 – FreeRDP before 3.29.0 : A client-side heap use-after-free in the async update message proxy affects RAIL WINDOW_STATE_ORDER and NOTIFY_ICON_STATE_ORDER when AsyncUpdate is enabled. If a malicious RDP server sends crafted update orders, the proxy shallow-copies structures containi...

CVE-2026-67291 FreeRDP before 3.29.0 Heap Out-of-Bounds Read via GLYPH_FRAGMENT_ADD

FreeRDP before 3.29.0 affected versions = 3.28.0 contains a heap out-of-bounds read in updateprocessglyphfragments/glyphcachefragmentput in libfreerdp/cache/glyph.c. When handling a GLYPHFRAGMENTADD update, the code reads a one-byte server-controlled declared fragment size but does not verify it...

EUVD-2026-51823

FreeRDP before 3.29.0 affected versions = 3.28.0 contains a heap out-of-bounds read in updateprocessglyphfragments/glyphcachefragmentput in libfreerdp/cache/glyph.c. When handling a GLYPHFRAGMENTADD update, the code reads a one-byte server-controlled declared fragment size but does not verify it...

CVE-2026-67288

Vulnerability summary: CVE-2026-67288 affects FreeRDP before 3.29.0. A null pointer dereference occurs in smartcard cache request decoders that accept NULL NDR pointers for LookupName in SCARD_IOCTL_READCACHEA and SCARD_IOCTL_WRITECACHEA. When smartcard emulation is enabled, an attacker can send ...

CVE-2026-67303 FreeRDP before 3.29.0 Denial of Service via serial DeviceControl

FreeRDP before 3.29.0 contains a reachable assertion WINPRASSERTOutputBufferLength == BytesReturned in serialprocessirpdevicecontrol in channels/serial/client/serialmain.c. When serial device redirection is enabled and a server-controlled IRPMJDEVICECONTROL request specifies an unsupported IOCTL...

CVE-2026-67302

CVE-2026-67302 affects FreeRDP before 3.29.0 (versions ≤ 3.28.0) and targets the rdpecam camera redirection client. A StartStreamsRequest with a server-controlled CAM_MEDIA_TYPE_DESCRIPTION may include a zero FrameRateDenominator; ecam_dev_process_start_streams_request() only validates Format and...

CVE-2026-67301

FreeRDP before 3.29.0 contains out-of-bounds read vulnerabilities in the async update message proxy for the PolygonSC and PolygonCB primary drawing orders. When AsyncUpdate is enabled e.g., xfreerdp /async-update, updatemessagePolygonSC and updatemessagePolygonCB allocate a fresh points array but...

EUVD-2026-51857

FreeRDP before 3.29.0 contains out-of-bounds read vulnerabilities in the async update message proxy for the PolygonSC and PolygonCB primary drawing orders. When AsyncUpdate is enabled e.g., xfreerdp /async-update, updatemessagePolygonSC and updatemessagePolygonCB allocate a fresh points array but...

CVE-2026-67301 FreeRDP before 3.29.0 Out-of-bounds Read via Polygon async message-proxy

FreeRDP before 3.29.0 contains out-of-bounds read vulnerabilities in the async update message proxy for the PolygonSC and PolygonCB primary drawing orders. When AsyncUpdate is enabled e.g., xfreerdp /async-update, updatemessagePolygonSC and updatemessagePolygonCB allocate a fresh points array but...

SUSE CVE-2026-55653

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange DH-GEX client path. This occurs during FIPS Federal Information Processing Standards mode known-group validation when the client processes attacker-controlled DH-GEX...

libssh2: libssh2: Denial of service or information disclosure via malformed SSH publickey response

A flaw in libssh2 allows a malicious SSH server to send a malformed public key response, triggering an invalid memory cleanup. This can cause the connecting client application to crash or leak information...

EUVD-2026-48753

A flaw was found in libsoup. An unsigned integer underflow in the soupfilterinputstreamreaduntil function causes a heap buffer over-read when parsing multipart HTTP responses. A malicious HTTP server can exploit this by sending a crafted multipart response, potentially causing the client...

CVE-2026-66033

libssh2 through 1.11.1, fixed in commit a2ed82d, contains a pre-authentication integer underflow vulnerability in the ssh2ciphercrypt function in src/openssl.c that allows a malicious SSH server to crash any connecting client by negotiating AES-GCM ciphers during handshake. Attackers can exploit...

CVE-2026-47275

In nanomq versions 0.24.11 and earlier, a NULL pointer dereference in nnimqttv5msgdecodeconnect allows a malicious MQTT broker to crash any connecting NanoMQ MQTTv5 client including bridge mode with a single packet, causing remote denial of service via SIGSEGV. In nnimqttv5msgdecodeconnect...

CVE-2026-47275

Nanomq has a NULL pointer dereference in nni_mqttv5_msg_decode_connect() (mqtt_codec.c:1863) for versions ≤ 0.24.11. The code iterates CONNECT properties using prop instead of will_prop; when a packet has no connect-level properties but has will properties, dereferencing prop->next can SIGSEGV...

xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: use-after-free in FreeCounter()

A use-after-free flaw was found in the X.Org X server and Xwayland in FreeCounter. A client that sets up multiple SyncCounters and awaits on those triggers can trigger a use-after-free when destroying those counters via a second client connection. This may be used to crash the server, or for...

CVE-2026-58051

A flaw in libssh2 allows a malicious SSH server to send a malformed public key response, triggering an invalid memory cleanup. This can cause the connecting client application to crash or leak information. Mitigation To mitigate this issue, ensure your applications connect only to trusted and...