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CVE-2026-112158— MikroTik RouterOS ipt_SAME.ko same_check integer overflow

Quick assessment

Affected
MikroTik RouterOS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 MikroTik RouterOS 6.40.5、6.44 和 7.20.8 及以下版本中发现了一个安全弱点，受影响的是 ipt_SAME.ko 文件中的 same_check 函数。通过执行恶意操作可触发整数溢出漏洞，该攻击可远程发起。建议将系统升级至 7.21.5 或 7.23.1 版本以修复此问题，请尽快对受影响的组件进行升级。

CVSS 6.5 · Medium

Affected Version Matrix 62

VendorProduct Version RangeStatus
MikroTik RouterOS 6.0 affected
6.1 affected
6.2 affected
6.3 affected
6.4 affected
6.5 affected
6.6 affected
6.7 affected
… +54 more rows
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I. Basic Information for CVE-2026-112158

Vulnerability Information
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Vulnerability Title
MikroTik RouterOS ipt_SAME.ko same_check integer overflow
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
MikroTik RouterOS 6.0 cpe:2.3:o:mikrotik:routeros:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-112158

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III. Intelligence Information for CVE-2026-112158

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Other References for CVE-2026-112158 (4)

IV. Related Vulnerabilities

Same product: RouterOS
Same vendor: MikroTik
Same weakness: CWE-190

V. Comments for CVE-2026-112158

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