{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-20T11:33:35.070","vulnerabilities":[{"cve":{"id":"CVE-2025-66023","sourceIdentifier":"security-advisories@github.com","published":"2026-01-01T15:15:41.580","lastModified":"2026-02-18T16:34:58.340","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. Versions prior to 0.24.5 have a Heap-Use-After-Free (UAF) vulnerability within the MQTT bridge client component (implemented via the underlying NanoNNG library). The vulnerability is triggered when NanoMQ acts as a bridge connecting to a remote MQTT broker. A malicious remote broker can trigger a crash (Denial of Service) or potential memory corruption by accepting the connection and immediately sending a malformed packet sequence. Version 0.34.5 contains a patch. The patch enforces stricter protocol adherence in the MQTT client SDK embedded in NanoMQ. Specifically, it ensures that CONNACK is always the first packet processed in the line. This prevents the state confusion that led to the Heap-Use-After-Free (UAF) when a malicious server sent a malformed packet sequence immediately after connection establishment. As a workaround, validate the remote broker before bridging."},{"lang":"es","value":"NanoMQ MQTT Broker (NanoMQ) es una plataforma de mensajería Edge integral. Las versiones anteriores a la 0.24.5 tienen una vulnerabilidad de uso después de liberación (UAF) de heap dentro del componente cliente de puente MQTT (implementada a través de la biblioteca NanoNNG subyacente). La vulnerabilidad se activa cuando NanoMQ actúa como un puente que se conecta a un broker MQTT remoto. Un broker remoto malicioso puede provocar un fallo (denegación de servicio) o una posible corrupción de memoria al aceptar la conexión y enviar inmediatamente una secuencia de paquetes malformada. La versión 0.34.5 contiene un parche. El parche impone una adherencia más estricta al protocolo en el SDK de cliente MQTT incrustado en NanoMQ. Específicamente, asegura que CONNACK sea siempre el primer paquete procesado en la línea. Esto evita la confusión de estado que llevó al uso después de liberación (UAF) de heap cuando un servidor malicioso envió una secuencia de paquetes malformada inmediatamente después del establecimiento de la conexión. Como solución alternativa, valide el broker remoto antes de establecer el puente."}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":6.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"HIGH","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","baseScore":4.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.2,"impactScore":3.6}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-416"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:emqx:nanomq:*:*:*:*:*:*:*:*","versionEndExcluding":"0.24.5","matchCriteriaId":"C2611740-8545-4416-83DC-F61FA8D85DCD"}]}]}],"references":[{"url":"https://github.com/nanomq/NanoNNG/pull/1365","source":"security-advisories@github.com","tags":["Issue Tracking","Patch"]},{"url":"https://github.com/nanomq/nanomq/issues/2145","source":"security-advisories@github.com","tags":["Issue Tracking"]},{"url":"https://github.com/nanomq/nanomq/security/advisories/GHSA-24f7-q5hh-27hf","source":"security-advisories@github.com","tags":["Vendor Advisory"]}]}}]}