{"id":"CVE-2026-103401","state":"PUBLISHED","title":"Session Smart Router and Session Smart Conductor: An attacker can overwrite arbitrary files as root","description":"An Improper Link Resolution Before File Access ('Link Following') vulnerability in the unauthenticated web server handlers in Juniper Networks Session Smart Router and Session Smart Conductor allows a local unprivileged user to overwrite arbitrary files as root via unauthenticated API endpoints.\n\nThis vulnerability can be exploited on Mist-managed routers and on unmanaged Routers that have not yet been onboarded to a Conductor. Routers already managed by Conductor are not affected.","publishedAt":"2026-10-28T16:34:44.566Z","updatedAt":"2026-10-28T16:34:44.566Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"juniper"},"assigner":"juniper","products":["Juniper Networks Session Smart Router","Juniper Networks Session Smart Conductor"],"affected":[{"vendor":"Juniper Networks","product":"Session Smart Router","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"7.0.5","versionType":"custom"},{"version":"7.1.0","status":"affected","lessThan":"7.1.7","versionType":"custom"},{"version":"7.2.0","status":"affected","lessThan":"7.2.3","versionType":"custom"}]},{"vendor":"Juniper Networks","product":"Session Smart Conductor","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"7.0.5","versionType":"custom"},{"version":"7.1.0","status":"affected","lessThan":"7.1.7","versionType":"custom"},{"version":"7.2.0","status":"affected","lessThan":"7.2.3","versionType":"custom"}]}],"references":["https://supportportal.juniper.net/JSA112183"],"weaknesses":["CWE-59"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/103xxx/CVE-2026-103401.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-103401","state":"PUBLISHED","datePublished":"2026-10-28T16:34:44.566Z","dateUpdated":"2026-10-28T16:34:44.566Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2026-09-30T14:33:03.168Z"},"containers":{"cna":{"title":"Session Smart Router and Session Smart Conductor: An attacker can overwrite arbitrary files as root","descriptions":[{"lang":"en","value":"An Improper Link Resolution Before File Access ('Link Following') vulnerability in the unauthenticated web server handlers in Juniper Networks Session Smart Router and Session Smart Conductor allows a local unprivileged user to overwrite arbitrary files as root via unauthenticated API endpoints.\n\nThis vulnerability can be exploited on Mist-managed routers and on unmanaged Routers that have not yet been onboarded to a Conductor. Routers already managed by Conductor are not affected."}],"affected":[{"vendor":"Juniper Networks","product":"Session Smart Router","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"7.0.5","versionType":"custom"},{"version":"7.1.0","status":"affected","lessThan":"7.1.7","versionType":"custom"},{"version":"7.2.0","status":"affected","lessThan":"7.2.3","versionType":"custom"}]},{"vendor":"Juniper Networks","product":"Session Smart Conductor","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"7.0.5","versionType":"custom"},{"version":"7.1.0","status":"affected","lessThan":"7.1.7","versionType":"custom"},{"version":"7.2.0","status":"affected","lessThan":"7.2.3","versionType":"custom"}]}],"references":[{"url":"https://supportportal.juniper.net/JSA112183","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-59","description":"CWE-59 Improper Link Resolution Before File Access ('Link Following')","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"juniper","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateUpdated":"2026-10-28T16:34:44.566Z"},"datePublic":"2026-10-28T16:00:00.000Z","exploits":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"The following software releases of Session Smart Router and Session Smart Conductor have been updated to resolve these specific issues:<br><ul><li>7.0.5 \n\nand all subsequent releases;</li><li>7.1.7 \n\nand all subsequent releases;</li><li>7.2.3 and all subsequent releases.</li></ul>\n\n<br>\n\n<br>"}],"value":"The following software releases of Session Smart Router and Session Smart Conductor have been updated to resolve these specific issues:\n  *  7.0.5 \n\nand all subsequent releases;\n  *  7.1.7 \n\nand all subsequent releases;\n  *  7.2.3 and all subsequent releases."}],"source":{"advisory":"JSA112183","defect":["I95-65017"],"discovery":"INTERNAL"},"workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"There are no known workarounds for this issue."}],"value":"There are no known workarounds for this issue."}],"x_generator":{"engine":"Vulnogram 0.1.0-dev"}}}}}