CVE-2026-112158

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.

CVSS v3 6.5 MEDIUM
CVSS v2.0 6.8 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:N/I:N/A:C

Exploitability : 8.0 / Impact : 6.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
https://github.com/MeetFireAgain/cve/mikrotik/routeros-ipt-same-integer-overflow-brick.md
https://vuldb.com/cve/CVE-2026-112158
https://vuldb.com/submit/956852
https://vuldb.com/vuln/422285
https://vuldb.com/vuln/422285/cti

Configurations

No configuration.

History

19 Oct 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-19 16:17

Updated : 2026-10-19 20:43

NVD link : CVE-2026-112158

Mitre link : CVE-2026-112158

CVE.ORG link : CVE-2026-112158

JSON object : View

Products Affected

No product.

CWE

CWE-189

Numeric Errors

CWE-190

Integer Overflow or Wraparound

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[{"cpes": ["cpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:*"], "vendor": "MikroTik", "product": "RouterOS", "versions": [{"status": "affected", "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": "unaffected", "version": "7.21.5"}, {"status": "unaffected", "version": "7.23.1"}]}]}], "published": "2026-10-19T16:17:05.917", "references": [{"url": "https://github.com/MeetFireAgain/cve/mikrotik/routeros-ipt-same-integer-overflow-brick.md", "source": "cna@vuldb.com"}, {"url": "https://vuldb.com/cve/CVE-2026-112158", "source": "cna@vuldb.com"}, {"url": "https://vuldb.com/submit/956852", "source": "cna@vuldb.com"}, {"url": "https://vuldb.com/vuln/422285", "source": "cna@vuldb.com"}, {"url": "https://vuldb.com/vuln/422285/cti", "source": "cna@vuldb.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "cna@vuldb.com", "description": [{"lang": "en", "value": "CWE-189"}, {"lang": "en", "value": "CWE-190"}]}], "descriptions": [{"lang": "en", "value": "A weakness has been identified in MikroTik RouterOS up to 6.40.5/6.44/7.20.8. 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