CVE-2025-63235

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In sol commit 373d848 (2024-12-12), the broker does not fully release resources when handling malformed or duplicate CONNECT packets. When clients send invalid CONNECT packets - either due to repeated attempts or failed authentication - the server may silently drop the connection or send a CONNACK but fail to close the session or deallocate internal resources. This behavior allows an attacker to create numerous half-open connections that consume memory and file descriptors indefinitely, potentially triggering the Linux OOM killer and causing a denial of service."}, {"lang": "es", "value": "En el commit sol 373d848 (2024-12-12), el broker no libera completamente los recursos al manejar paquetes CONNECT malformados o duplicados. Cuando los clientes env\u00edan paquetes CONNECT inv\u00e1lidos, ya sea debido a intentos repetidos o a una autenticaci\u00f3n fallida, el servidor puede cerrar la conexi\u00f3n silenciosamente o enviar un CONNACK pero no cerrar la sesi\u00f3n o desasignar recursos internos. Este comportamiento permite a un atacante crear numerosas conexiones semiabiertas que consumen memoria y descriptores de archivo indefinidamente, lo que podr\u00eda activar el OOM killer de Linux y causar una denegaci\u00f3n de servicio."}], "id": "CVE-2025-63235", "lastModified": "2026-09-29T11:10:00.150", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-63235", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-07T19:12:48.532653Z", "version": "2.0.3"}}]}, "published": "2026-08-07T19:17:33.580", "references": [{"source": "cve@mitre.org", "url": "https://github.com/codepr/sol/issues/12"}, {"source": "cve@mitre.org", "url": "https://github.com/peter-pe/sol-vulnerabilities/blob/main/CVE-2025-63235.md"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/codepr/sol/issues/12"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/peter-pe/sol-vulnerabilities/blob/main/CVE-2025-63235.md"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "codepr sol: Sol: Denial of service via resource exhaustion from malformed CONNECT packets", "id": "2512606", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2512606"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["A flaw was found in sol. The broker does not fully release resources when handling malformed or duplicate CONNECT packets. A remote attacker can send invalid CONNECT packets, which may cause the server to silently drop the connection or send a CONNACK without properly closing the session or deallocating internal resources. This behavior allows an attacker to create numerous half-open connections, consuming memory and file descriptors indefinitely, potentially leading to a denial of service."], "name": "CVE-2025-63235", "public_date": "2026-08-07T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-63235\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-63235\nhttps://github.com/codepr/sol/issues/12\nhttps://github.com/peter-pe/sol-vulnerabilities/blob/main/CVE-2025-63235.md"], "threat_severity": "Important"}

{"created": "2026-08-07T20:45:03.378113+00:00", "updated": "2026-08-08T02:30:04.977982+00:00", "vendors": []}