{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-21913", "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "state": "PUBLISHED", "assignerShortName": "juniper", "dateReserved": "2026-01-05T17:32:48.710Z", "datePublished": "2026-01-15T20:25:03.276Z", "dateUpdated": "2026-01-15T20:45:02.652Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "platforms": ["EX4000-48T", "EX4000-48P", "EX4000-48MP"], "product": "Junos OS", "vendor": "Juniper Networks", "versions": [{"lessThan": "24.4R2", "status": "affected", "version": "24.4", "versionType": "semver"}, {"lessThan": "25.2R1-S2, 25.2R2", "status": "affected", "version": "25.2", "versionType": "semver"}, {"lessThan": "24.4R1", "status": "unaffected", "version": "0", "versionType": "semver"}]}], "datePublic": "2026-01-14T17:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "An Incorrect Initialization of Resource vulnerability in the Internal Device Manager (IDM) of Juniper Networks Junos OS on EX4000 models allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).<p>\n\n<span style=\"background-color: rgb(255, 255, 255);\">On EX4000 models with 48 ports (EX4000-48T, EX4000-48P, EX4000-48MP)&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">a high volume of traffic destined to the device will cause an FXPC crash and restart, which leads to a complete service outage until the device has automatically restarted.</span></span></p><p><span style=\"background-color: rgb(255, 255, 255);\"><br></span></p><p><span style=\"background-color: rgb(255, 255, 255);\">The following reboot reason can be seen in the output of 'show chassis routing-engine' and as a log message:</span></p><tt>&nbsp; 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