CVE-2026-112158
Full vulnerability record from the local CVENow database.
Description
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. Upgrading to version 7.21.5 and 7.23.1 is recommended to address this issue. You should upgrade the affected component.
Severity
HIGH
CVSS score
7.1
(v4.0)
Vulnerability status
Deferred
Source identifier
Published
2026-10-19 16:17:05.917000
Last modified
2026-10-19 20:43:24.237000
View original CVE JSON
{
"id": "CVE-2026-112158",
"sourceIdentifier": "[email protected]",
"published": "2026-10-19T16:17:05.917",
"lastModified": "2026-10-19T20:43:24.237",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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. Upgrading to version 7.21.5 and 7.23.1 is recommended to address this issue. You should upgrade the affected component."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "MikroTik",
"product": "RouterOS",
"cpes": [
"cpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:*"
],
"versions": [
{
"version": "6.0",
"status": "affected"
},
{
"version": "6.1",
"status": "affected"
},
{
"version": "6.2",
"status": "affected"
},
{
"version": "6.3",
"status": "affected"
},
{
"version": "6.4",
"status": "affected"
},
{
"version": "6.5",
"status": "affected"
},
{
"version": "6.6",
"status": "affected"
},
{
"version": "6.7",
"status": "affected"
},
{
"version": "6.8",
"status": "affected"
},
{
"version": "6.9",
"status": "affected"
},
{
"version": "6.10",
"status": "affected"
},
{
"version": "6.11",
"status": "affected"
},
{
"version": "6.12",
"status": "affected"
},
{
"version": "6.13",
"status": "affected"
},
{
"version": "6.14",
"status": "affected"
},
{
"version": "6.15",
"status": "affected"
},
{
"version": "6.16",
"status": "affected"
},
{
"version": "6.17",
"status": "affected"
},
{
"version": "6.18",
"status": "affected"
},
{
"version": "6.19",
"status": "affected"
},
{
"version": "6.20",
"status": "affected"
},
{
"version": "6.21",
"status": "affected"
},
{
"version": "6.22",
"status": "affected"
},
{
"version": "6.23",
"status": "affected"
},
{
"version": "6.24",
"status": "affected"
},
{
"version": "6.25",
"status": "affected"
},
{
"version": "6.26",
"status": "affected"
},
{
"version": "6.27",
"status": "affected"
},
{
"version": "6.28",
"status": "affected"
},
{
"version": "6.29",
"status": "affected"
},
{
"version": "6.30",
"status": "affected"
},
{
"version": "6.31",
"status": "affected"
},
{
"version": "6.32",
"status": "affected"
},
{
"version": "6.33",
"status": "affected"
},
{
"version": "6.34",
"status": "affected"
},
{
"version": "6.35",
"status": "affected"
},
{
"version": "6.36",
"status": "affected"
},
{
"version": "6.37",
"status": "affected"
},
{
"version": "6.38",
"status": "affected"
},
{
"version": "6.39",
"status": "affected"
},
{
"version": "6.40",
"status": "affected"
},
{
"version": "6.40.0",
"status": "affected"
},
{
"version": "6.40.1",
"status": "affected"
},
{
"version": "6.40.2",
"status": "affected"
},
{
"version": "6.40.3",
"status": "affected"
},
{
"version": "6.40.4",
"status": "affected"
},
{
"version": "6.40.5",
"status": "affected"
},
{
"version": "6.41",
"status": "affected"
},
{
"version": "6.42",
"status": "affected"
},
{
"version": "6.43",
"status": "affected"
},
{
"version": "6.44",
"status": "affected"
},
{
"version": "7.20.0",
"status": "affected"
},
{
"version": "7.20.1",
"status": "affected"
},
{
"version": "7.20.2",
"status": "affected"
},
{
"version": "7.20.3",
"status": "affected"
},
{
"version": "7.20.4",
"status": "affected"
},
{
"version": "7.20.5",
"status": "affected"
},
{
"version": "7.20.6",
"status": "affected"
},
{
"version": "7.20.7",
"status": "affected"
},
{
"version": "7.20.8",
"status": "affected"
},
{
"version": "7.21.5",
"status": "unaffected"
},
{
"version": "7.23.1",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV40": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "4.0",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"confidentialityRequirement": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"availabilityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED"
}
}
],
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6
}
],
"cvssMetricV2": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "2.0",
"vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:C",
"baseScore": 6.8,
"accessVector": "NETWORK",
"accessComplexity": "LOW",
"authentication": "SINGLE",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "COMPLETE"
},
"baseSeverity": "MEDIUM",
"exploitabilityScore": 8.0,
"impactScore": 6.9,
"acInsufInfo": false,
"obtainAllPrivilege": false,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-10-19T17:08:58.536559Z",
"id": "CVE-2026-112158",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-189"
},
{
"lang": "en",
"value": "CWE-190"
}
]
}
],
"references": [
{
"url": "https://github.com/MeetFireAgain/cve/mikrotik/routeros-ipt-same-integer-overflow-brick.md",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/cve/CVE-2026-112158",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/submit/956852",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/vuln/422285",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/vuln/422285/cti",
"source": "[email protected]"
}
]
}