RHLW-2026-48B9709BA25473BE Lightwell Security Advisory: netty-codec-mqtt 4.1.100.Final-rhlw-00001

Red Hat Lightwell has released io.netty:netty-codec-mqtt 4.1.100.Final-rhlw-00001 with a backported security fix. CVE-2026-44248: Netty: Resource exhaustion in MqttDecoder This patched artifact is a drop-in replacement for io.netty:netty-codec-mqtt 4.1.100.Final from Maven Central...

Linux Distros Unpatched Vulnerability : CVE-2026-93575

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. T...

SUSE CVE-2026-93575

A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. The decoder fails to properly validate the 'Properties Length' against the 'Remaining Length', allowing an attacker to bypass size limits...

DEBIAN-CVE-2026-93575

A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. The decoder fails to properly validate the 'Properties Length' against the 'Remaining Length', allowing an attacker to bypass size limits...

CVE-2026-93575

A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. The decoder fails to properly validate the 'Properties Length' against the 'Remaining Length', allowing an attacker to bypass size limits...

CVE-2026-93575

A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. The decoder fails to properly validate the 'Properties Length' against the 'Remaining Length', allowing an attacker to bypass size limits...

UBUNTU-CVE-2026-93575

A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. The decoder fails to properly validate the 'Properties Length' against the 'Remaining Length', allowing an attacker to bypass size limits...

CVE-2026-93575 Io.netty/netty-codec-mqtt: netty: resource exhaustion in mqttdecoder

A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. The decoder fails to properly validate the 'Properties Length' against the 'Remaining Length', allowing an attacker to bypass size limits...

CVE-2026-93575

A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. The decoder fails to properly validate the 'Properties Length' against the 'Remaining Length', allowing an attacker to bypass size limits...

EUVD-2026-82869

A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. The decoder fails to properly validate the 'Properties Length' against the 'Remaining Length', allowing an attacker to bypass size limits...

CVE-2026-93575 Io.netty/netty-codec-mqtt: netty: resource exhaustion in mqttdecoder

A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. The decoder fails to properly validate the 'Properties Length' against the 'Remaining Length', allowing an attacker to bypass size limits...

CVE-2026-93575

CVE-2026-93575 is an incomplete fix for CVE-2026-44248 in Netty's MQTT codec (io.netty.handler.codec.mqtt.MqttDecoder). The decoder validates the packet's Remaining Length against maxBytesInMessage but fails to validate the Properties Length against it. An unauthenticated remote attacker can send...

CVE-2026-93575

A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. The decoder fails to properly validate the 'Properties Length' against the 'Remaining Length', allowing an attacker to bypass size limits...

CVE-2026-93575: Undefined Security Weakness

A flaw was found in Netty's MqttDecoder. An unauthenticated remote attacker can exploit this vulnerability by sending a specially crafted MQTT CONNECT packet. The decoder fails to properly validate the 'Properties Length' against the 'Remaining Length', allowing an attacker to bypass size limits...

PT-2026-95357

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.1.138-1.1 Description A flaw in the MqttDecoder allows an unauthenticated remote attacker to cause a denial of service DoS by sending a specially crafted MQTT CONNECT packet. The decoder does not properly validate the...

CVE-2026-44248

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, the MQTT 5 header Properties section is parsed and buffered before any message size limit is applied. Specifically, in MqttDecoder, the decodeVariableHeader method is called before the...

CVE-2026-44248: Uncontrolled Resource Consumption

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, the MQTT 5 header Properties section is parsed and buffered before any message size limit is applied. Specifically, in MqttDecoder, the decodeVariableHeader method is called before the...