{"id":"CVE-2026-112158","title":"MikroTik RouterOS ipt_SAME.ko same_check integer overflow","summary":"A weakness has been identified in MikroTik RouterOS up to 6.40.5/6.44/7.20.8. Impacted is the function same_check of the file ipt_SAME.ko. Executing a manipulation can lead to integer overflow. The attack may be launched remotely. Upgrad…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:X/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-190","CWE-189"],"vendor":"MikroTik","product":"RouterOS","affected":["RouterOS 6.0","RouterOS 6.1","RouterOS 6.2","RouterOS 6.3","RouterOS 6.4","RouterOS 6.5","RouterOS 6.6","RouterOS 6.7","RouterOS 6.8","RouterOS 6.9","RouterOS 6.10","RouterOS 6.11","RouterOS 6.12","RouterOS 6.13","RouterOS 6.14","RouterOS 6.15","RouterOS 6.16","RouterOS 6.17","RouterOS 6.18","RouterOS 6.19","RouterOS 6.20","RouterOS 6.21","RouterOS 6.22","RouterOS 6.23","RouterOS 6.24","RouterOS 6.25","RouterOS 6.26","RouterOS 6.27","RouterOS 6.28","RouterOS 6.29","RouterOS 6.30","RouterOS 6.31","RouterOS 6.32","RouterOS 6.33","RouterOS 6.34","RouterOS 6.35","RouterOS 6.36","RouterOS 6.37","RouterOS 6.38","RouterOS 6.39","RouterOS 6.40","RouterOS 6.40.0","RouterOS 6.40.1","RouterOS 6.40.2","RouterOS 6.40.3","RouterOS 6.40.4","RouterOS 6.40.5","RouterOS 6.41","RouterOS 6.42","RouterOS 6.43"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-19T17:08:58.536559Z"},"published":"2026-10-19","updated":"2026-10-19","sourceUpdated":"2026-10-19T17:09:43.696Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-112158","references":[{"url":"https://vuldb.com/vuln/422285","label":"VDB-422285 | MikroTik RouterOS ipt_SAME.ko same_check integer overflow"},{"url":"https://vuldb.com/vuln/422285/cti","label":"VDB-422285 | CTI Indicators (IOB, IOC, IOA)"},{"url":"https://vuldb.com/cve/CVE-2026-112158","label":"CVE-2026-112158 | CVE Analysis and Report"},{"url":"https://vuldb.com/submit/956852","label":"Submit #956852 | MikroTik RouterOS <= 7.20.x long-term channel (tested: 6.40.5, 6.44, 7.20.8); v6 line affected Integer Overflow"},{"url":"https://github.com/MeetFireAgain/cve/mikrotik/routeros-ipt-same-integer-overflow-brick.md"}],"tags":["cve.org"],"ingestedAt":"2026-10-19T16:32:30.073Z","slug":"CVE-2026-112158","body":"## Overview\n\nA weakness has been identified in MikroTik RouterOS up to 6.40.5/6.44/7.20.8. Impacted is the function same_check of the file ipt_SAME.ko. Executing a manipulation can lead to integer overflow. The attack may be launched remotely. Upgrading to version 7.21.5 and 7.23.1 is recommended to address this issue. You should upgrade the affected component.\n\n## Affected\n\n- `RouterOS 6.0`\n- `RouterOS 6.1`\n- `RouterOS 6.2`\n- `RouterOS 6.3`\n- `RouterOS 6.4`\n- `RouterOS 6.5`\n- `RouterOS 6.6`\n- `RouterOS 6.7`\n- `RouterOS 6.8`\n- `RouterOS 6.9`\n- `RouterOS 6.10`\n- `RouterOS 6.11`\n- `RouterOS 6.12`\n- `RouterOS 6.13`\n- `RouterOS 6.14`\n- `RouterOS 6.15`\n- `RouterOS 6.16`\n- `RouterOS 6.17`\n- `RouterOS 6.18`\n- `RouterOS 6.19`\n- `RouterOS 6.20`\n- `RouterOS 6.21`\n- `RouterOS 6.22`\n- `RouterOS 6.23`\n- `RouterOS 6.24`\n- `RouterOS 6.25`\n- `RouterOS 6.26`\n- `RouterOS 6.27`\n- `RouterOS 6.28`\n- `RouterOS 6.29`\n- `RouterOS 6.30`\n- `RouterOS 6.31`\n- `RouterOS 6.32`\n- `RouterOS 6.33`\n- `RouterOS 6.34`\n- `RouterOS 6.35`\n- `RouterOS 6.36`\n- `RouterOS 6.37`\n- `RouterOS 6.38`\n- `RouterOS 6.39`\n- `RouterOS 6.40`\n- `RouterOS 6.40.0`\n- `RouterOS 6.40.1`\n- `RouterOS 6.40.2`\n- `RouterOS 6.40.3`\n- `RouterOS 6.40.4`\n- `RouterOS 6.40.5`\n- `RouterOS 6.41`\n- `RouterOS 6.42`\n- `RouterOS 6.43`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}