{"id":"CVE-2026-103392","state":"PUBLISHED","title":"Session Smart Router: A SACK option causes out-of-bounds memory access and TCP payload corruption when TCP sequence stitching is enabled","description":"An Out-of-Bounds Write vulnerability in the TCP header processing in Juniper Networks Session Smart Router allows an attacker to corrupt TCP payload data and potentially cause session desynchronization via a transit TCP packet with an oversized SACK option length.","publishedAt":"2026-10-28T16:33:46.534Z","updatedAt":"2026-10-28T16:33:46.534Z","severity":{"score":4.8,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L","source":"juniper"},"assigner":"juniper","products":["Juniper Networks Session Smart Router"],"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"}]}],"references":["https://supportportal.juniper.net/JSA112183"],"weaknesses":["CWE-787"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/103xxx/CVE-2026-103392.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-103392","state":"PUBLISHED","datePublished":"2026-10-28T16:33:46.534Z","dateUpdated":"2026-10-28T16:33:46.534Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2026-09-30T14:27:56.628Z"},"containers":{"cna":{"title":"Session Smart Router: A SACK option causes out-of-bounds memory access and TCP payload corruption when TCP sequence stitching is enabled","descriptions":[{"lang":"en","value":"An Out-of-Bounds Write vulnerability in the TCP header processing in Juniper Networks Session Smart Router allows an attacker to corrupt TCP payload data and potentially cause session desynchronization via a transit TCP packet with an oversized SACK option length."}],"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"}]}],"references":[{"url":"https://supportportal.juniper.net/JSA112183","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":4.8,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds Write","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"juniper","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateUpdated":"2026-10-28T16:33:46.534Z"},"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 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>"}],"value":"The following software releases of Session Smart Router 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":["I95-65238"],"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"}}}}}