CVE-2026-57021

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"operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An Out-of-bounds Write vulnerability in the http-gatekeeper (http-gk) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\n\nIf an SRX Series device is configured for remote-access VPN with pre-logon compliance check, a network-based attacker sending specifically formatted requests can trigger an out of bounds write leading to an http-gk process crash. This crash leads to unavailability of all services depending on the [ system services web-management ] configuration (like J-Web, remote access VPN and firewall authentication) until the process automatically restarts.\n\nThis issue affects\u00a0Junos OS on SRX Series:\n\n\n * 23.2 versions before 23.2R2-S7,\n * 23.4 versions before 23.4R2-S8,\n * 24.2 versions before 24.2R2-S4,\n * 24.4 versions before 24.4R2-S4,\n * 25.2 versions before 25.2R2,\n * 25.4 versions before 25.4R1-S1, 25.4R2."}, {"lang": "es", "value": "Una vulnerabilidad de escritura fuera de l\u00edmites en el http-gatekeeper (http-gk) de Juniper Networks Junos OS en la serie SRX permite a un atacante no autenticado y basado en red causar una Denegaci\u00f3n de Servicio (DoS).\n\nSi un dispositivo de la serie SRX est\u00e1 configurado para VPN de acceso remoto con verificaci\u00f3n de cumplimiento previa al inicio de sesi\u00f3n, un atacante basado en red que env\u00eda solicitudes espec\u00edficamente formateadas puede desencadenar una escritura fuera de l\u00edmites que lleva a un fallo del proceso http-gk. Este fallo provoca la indisponibilidad de todos los servicios que dependen de la configuraci\u00f3n [ system services web-management ] (como J-Web, VPN de acceso remoto y autenticaci\u00f3n de cortafuegos) hasta que el proceso se reinicia autom\u00e1ticamente.\n\nEste problema afecta a Junos OS en la serie SRX:\n\n * versiones 23.2 anteriores a 23.2R2-S7,\n * versiones 23.4 anteriores a 23.4R2-S8,\n * versiones 24.2 anteriores a 24.2R2-S4,\n * versiones 24.4 anteriores a 24.4R2-S4,\n * versiones 25.2 anteriores a 25.2R2,\n * versiones 25.4 anteriores a 25.4R1-S1, 25.4R2."}], "id": "CVE-2026-57021", "lastModified": "2026-10-25T15:10:00.147", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "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:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "sirt@juniper.net", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "YES", "Recovery": "AUTOMATIC", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/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:Y/R:A/V:X/RE:M/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "MODERATE"}, "source": "sirt@juniper.net", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-57021", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-10T14:28:36.986263Z", "version": "2.0.3"}}]}, "published": "2026-07-09T22:17:07.057", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://supportportal.juniper.net/JSA110081"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "sirt@juniper.net", "type": "Secondary"}]}

{}

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