{"id":"CVE-2026-103411","title":"Session Smart Router: A malicious DHCP server causes information disclosure and a service crash during DHCP option parsing","summary":"An Integer Underflow vulnerability in DhcpMessageDecoder in Juniper Networks Session Smart Router allows an attacker with local network access to cause information disclosure and a denial of service via a malicious DHCP reply.","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","cvssSource":"cna","cwe":["CWE-191"],"vendor":"Juniper Networks","product":"Session Smart Router","affected":["session_smart_router < 7.0.5","session_smart_router >= 7.1.0 < 7.1.7","session_smart_router >= 7.2.0 < 7.2.3"],"published":"2026-10-28","updated":"2026-10-28","sourceUpdated":"2026-10-28T16:37:35.468Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-103411","references":[{"url":"https://supportportal.juniper.net/JSA112183"}],"tags":["cve.org"],"ingestedAt":"2026-10-28T17:14:44.468Z","slug":"CVE-2026-103411","body":"## Overview\n\nAn Integer Underflow vulnerability in DhcpMessageDecoder in Juniper Networks Session Smart Router allows an attacker with local network access to cause information disclosure and a denial of service via a malicious DHCP reply.\n\n## Affected\n\n- `session_smart_router < 7.0.5`\n- `session_smart_router >= 7.1.0 < 7.1.7`\n- `session_smart_router >= 7.2.0 < 7.2.3`\n\n## Remediation\n\nThe 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.\n\n### Workarounds\n\nThere are no known workarounds for this issue.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}