{"id":"CVE-2026-103411","aliases":["EUVD-2026-112208","GHSA-qfqf-wwr7-vhxm"],"status":"published","title":"Session Smart Router: A malicious DHCP server causes information disclosure and a service crash during DHCP option parsing","description":"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":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00174,"percentile":0.06984,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-191"],"published":"2026-10-28T16:37:35Z","modified":"2026-11-05T19:06:55Z","products":[{"vendor":"juniper networks","product":"session smart router"}],"references":[{"url":"https://supportportal.juniper.net/JSA112183","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103411"},{"url":"https://github.com/advisories/GHSA-qfqf-wwr7-vhxm"}],"sources":{"cve":[{"id":"CVE-2026-103411","title":"Session Smart Router: A malicious DHCP server causes information disclosure and a service crash during DHCP option parsing","description":"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.","status":"published","published":"2026-10-28T16:37:35.468Z","modified":"2026-11-05T19:06:55.96Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-191"],"updated_at":"2026-11-05T20:54:58.923322Z"}],"euvd":[{"id":"EUVD-2026-112208","description":"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.","status":"published","published":"2026-10-28T16:37:35Z","modified":"2026-11-05T19:06:55Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"high"}],"updated_at":"2026-11-05T20:01:48.21368Z"}],"ghsa":[{"id":"GHSA-qfqf-wwr7-vhxm","title":"An Integer Underflow vulnerability in DhcpMessageDecoder in Juniper Networks Session Smart Router...","description":"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.","status":"published","published":"2026-10-28T18:32:03Z","modified":"2026-10-28T18:32:10Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"high"}],"cwes":["CWE-191"],"updated_at":"2026-11-02T15:14:35.861264Z"}],"nvd":[{"id":"CVE-2026-103411","description":"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.","status":"published","published":"2026-10-28T17:17:28.397Z","modified":"2026-11-05T19:17:07.127Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-191"],"updated_at":"2026-11-05T21:56:47.444894Z"}]}}