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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact None

Integrity Impact None

Availability Impact Complete

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
MikroTik RouterOS affected
Version Status Constraints
6.0 affected —
6.1 affected —
6.2 affected —
6.3 affected —
6.4 affected —
6.5 affected —
6.6 affected —
6.7 affected —
6.8 affected —
6.9 affected —
6.10 affected —
6.11 affected —
6.12 affected —
6.13 affected —
6.14 affected —
6.15 affected —
6.16 affected —
6.17 affected —
6.18 affected —
6.19 affected —
6.20 affected —
6.21 affected —
6.22 affected —
6.23 affected —
6.24 affected —
6.25 affected —
6.26 affected —
6.27 affected —
6.28 affected —
6.29 affected —
6.30 affected —
6.31 affected —
6.32 affected —
6.33 affected —
6.34 affected —
6.35 affected —
6.36 affected —
6.37 affected —
6.38 affected —
6.39 affected —
6.40 affected —
6.40.0 affected —
6.40.1 affected —
6.40.2 affected —
6.40.3 affected —
6.40.4 affected —
6.40.5 affected —
6.41 affected —
6.42 affected —
6.43 affected —
6.44 affected —
7.20.0 affected —
7.20.1 affected —
7.20.2 affected —
7.20.3 affected —
7.20.4 affected —
7.20.5 affected —
7.20.6 affected —
7.20.7 affected —
7.20.8 affected —
7.21.5 unaffected —
7.23.1 unaffected —

No data.

No data.

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Vendors Products
Mikrotik Subscribe
Routeros Subscribe

Project Subscriptions

Vendors Products
Mikrotik Subscribe
Routeros Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Mon, 19 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 19 Oct 2026 16:15:00 +0000

Type Values Removed Values Added
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.
Title MikroTik RouterOS ipt_SAME.ko same_check integer overflow
First Time appeared Mikrotik
Mikrotik routeros
Weaknesses CWE-189
CWE-190
CPEs cpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:*
Vendors & Products Mikrotik
Mikrotik routeros
References
Metrics cvssV2_0

{'score': 6.8, 'vector': 'AV:N/AC:L/Au:S/C:N/I:N/A:C/E:ND/RL:OF/RC:C'}

cvssV3_0

{'score': 6.5, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:X/RL:O/RC:C'}

cvssV3_1

{'score': 6.5, 'vector': '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'}

cvssV4_0

{'score': 7.1, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-10-19T17:09:43.696Z

Reserved: 2026-10-19T07:05:54.496Z

Link: CVE-2026-112158

cve-icon Vulnrichment

Updated: 2026-10-19T17:09:04.336Z

cve-icon NVD

Status : Deferred

Published: 2026-10-19T16:17:05.917

Modified: 2026-10-19T20:43:24.237

Link: CVE-2026-112158

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T19:15:04Z

Weaknesses