{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2025-52955", "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "state": "PUBLISHED", "assignerShortName": "juniper", "dateReserved": "2025-06-23T13:16:01.410Z", "datePublished": "2025-07-11T14:42:20.206Z", "dateUpdated": "2025-08-20T18:32:11.120Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"lessThan": "21.2R3-S9", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "21.4*", "status": "affected", "version": "21.4", "versionType": "semver"}, {"lessThan": "22.2*", "status": "affected", "version": "22.2", "versionType": "semver"}, {"lessThan": "22.4R3-S7", "status": "affected", "version": "22.4", "versionType": "semver"}, {"lessThan": "23.2R2-S3", "status": "affected", "version": "23.2", "versionType": "semver"}, {"lessThan": "23.4R2-S4", "status": "affected", "version": "23.4", "versionType": "semver"}, {"lessThan": "24.2R2", "status": "affected", "version": "24.2", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "Junos OS Evolved", "vendor": "Juniper Networks", "versions": [{"lessThan": "21.2*-EVO", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "21.4*-EVO", "status": "affected", "version": "21.4", "versionType": "semver"}, {"lessThan": "22.2*-EVO", "status": "affected", "version": "22.2", "versionType": "semver"}, {"lessThan": "22.4R3-S7-EVO", "status": "affected", "version": "22.4", "versionType": "semver"}, {"lessThan": "23.2R2-S3-EVO", "status": "affected", "version": "23.2", "versionType": "semver"}, {"lessThan": "23.4R2-S4-EVO", "status": "affected", "version": "23.4", "versionType": "semver"}, {"lessThan": "24.2R2-EVO", "status": "affected", "version": "24.2", "versionType": "semver"}]}], "configurations": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>This issue only happens when jflow is configured:</p><code> [services flow-monitoring (version-ipfix|version9)]</code><br>"}], "value": "This issue only happens when jflow is configured:\n\n [services flow-monitoring (version-ipfix|version9)]"}], "datePublic": "2025-07-09T16:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<span style=\"background-color: rgb(255, 255, 255);\">An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a memory corruption that leads&nbsp;to a rpd crash.&nbsp;<br><br></span>\n\n\n\n\n\n\n\n\n\n<p>When\nthe logical interface using a routing instance flaps continuously, specific updates are sent to the jflow/sflow modules. 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0.1.0-dev"}, "descriptions": [{"lang": "en", "value": "An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a memory corruption that leads\u00a0to a rpd crash.\u00a0\n\n\n\n\n\n\n\n\n\n\n\nWhen\nthe logical interface using a routing instance flaps continuously, specific updates are sent to the jflow/sflow modules. This results in memory corruption, leading to an rpd crash and restart.\u00a0\n\n\nContinued receipt of these specific updates will cause a sustained Denial of Service condition.\n\n\nThis issue affects Junos OS:\n\n * All versions before 21.2R3-S9, \n * All versions of 21.4, \n * All versions of 22.2, \n * from 22.4 before 22.4R3-S7, \n * from 23.2 before 23.2R2-S3, \n * from 23.4 before 23.4R2-S4, \n * from 24.2 before 24.2R2.\n\n\nJunos OS Evolved:\u00a0\n\n\n\n * All versions of 21.2-EVO,\u00a0\n * All versions of 21.4-EVO,\u00a0\n * All versions of 22.2-EVO,\u00a0\n * from 22.4 before 22.4R3-S7-EVO,\u00a0\n * from 23.2 before 23.2R2-S3-EVO,\u00a0\n * from 23.4 before 23.4R2-S4-EVO,\u00a0\n * from 24.2 before 24.2R2-EVO.", "supportingMedia": [{"type": "text/html", "value": "<span style=\"background-color: rgb(255, 255, 255);\">An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a memory corruption that leads&nbsp;to a rpd crash.&nbsp;<br><br></span>\n\n\n\n\n\n\n\n\n\n<p>When\nthe logical interface using a routing instance flaps continuously, specific updates are sent to the jflow/sflow modules. 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"An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a memory corruption that leads\u00a0to a rpd crash.\u00a0\n\n\n\n\n\n\n\n\n\n\n\nWhen\nthe logical interface using a routing instance flaps continuously, specific updates are sent to the jflow/sflow modules. This results in memory corruption, leading to an rpd crash and restart.\u00a0\n\n\nContinued receipt of these specific updates will cause a sustained Denial of Service condition.\n\n\nThis issue affects Junos OS:\n\n * All versions before 21.2R3-S9, \n * All versions of 21.4, \n * All versions of 22.2, \n * from 22.4 before 22.4R3-S7, \n * from 23.2 before 23.2R2-S3, \n * from 23.4 before 23.4R2-S4, \n * from 24.2 before 24.2R2.\n\n\nJunos OS Evolved:\u00a0\n\n\n\n * All versions of 21.2-EVO,\u00a0\n * All versions of 21.4-EVO,\u00a0\n * All versions of 22.2-EVO,\u00a0\n * from 22.4 before 22.4R3-S7-EVO,\u00a0\n * from 23.2 before 23.2R2-S3-EVO,\u00a0\n * from 23.4 before 23.4R2-S4-EVO,\u00a0\n * from 24.2 before 24.2R2-EVO."}, {"lang": "es", "value": "Una vulnerabilidad de c\u00e1lculo incorrecto del tama\u00f1o del b\u00fafer en el daemon del protocolo de enrutamiento (rpd) de Juniper Networks Junos OS permite que un atacante adyacente no autenticado cause una corrupci\u00f3n de memoria que provoca un bloqueo de rpd. Cuando la interfaz l\u00f3gica que utiliza una instancia de enrutamiento presenta fluctuaciones continuas, se env\u00edan actualizaciones espec\u00edficas a los m\u00f3dulos jflow/sflow. Esto provoca una corrupci\u00f3n de memoria, lo que provoca un bloqueo y reinicio de rpd. La recepci\u00f3n continua de estas actualizaciones espec\u00edficas provocar\u00e1 una denegaci\u00f3n de servicio (DPS) sostenida. Este problema afecta a Junos OS: * Todas las versiones anteriores a 21.2R3-S9, * Todas las versiones de 21.4, * Todas las versiones de 22.2, * De 22.4 a 22.4R3-S7, * De 23.2 a 23.2R2-S3, * De 23.4 a 23.4R2-S4, * De 24.2 a 24.2R2."}], "id": "CVE-2025-52955", "lastModified": "2026-01-23T19:37:34.903", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "sirt@juniper.net", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "AUTOMATIC", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "ADJACENT", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.1, "baseSeverity": "HIGH", "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": "GREEN", "subAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/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:A/V:X/RE:X/U:Green", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "sirt@juniper.net", "type": "Secondary"}]}, "published": "2025-07-11T15:15:26.447", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://supportportal.juniper.net/JSA100062"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-131"}], "source": "sirt@juniper.net", "type": "Secondary"}]}

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