{"id":"CVE-2026-103392","aliases":["EUVD-2026-112224","GHSA-5q73-79v3-mp67"],"status":"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.","severity":{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00216,"percentile":0.12141,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2026-10-28T16:33:46Z","modified":"2026-11-05T18:59:19Z","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-2026-103392"},{"url":"https://github.com/advisories/GHSA-5q73-79v3-mp67"}],"sources":{"cve":[{"id":"CVE-2026-103392","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.","status":"published","published":"2026-10-28T16:33:46.534Z","modified":"2026-11-05T18:59:19.015Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-787"],"updated_at":"2026-11-05T19:54:50.971852Z"}],"euvd":[{"id":"EUVD-2026-112224","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.","status":"published","published":"2026-10-28T16:33:46Z","modified":"2026-11-05T18:59:19Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"updated_at":"2026-11-05T20:01:48.85376Z"}],"ghsa":[{"id":"GHSA-5q73-79v3-mp67","title":"An Out-of-Bounds Write vulnerability in the TCP header processing in Juniper Networks Session...","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.","status":"published","published":"2026-10-28T18:32:02Z","modified":"2026-10-28T18:32:10Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T15:14:35.861264Z"}],"nvd":[{"id":"CVE-2026-103392","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.","status":"published","published":"2026-10-28T17:17:22.543Z","modified":"2026-11-05T19:17:06.85Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-05T21:56:47.444894Z"}]}}