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CVE-2026-18368— Heap buffer overflow in Modbusgwd

Quick assessment

Affected
Teltonika Networks RUTOS
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.

Teltonika Networks RUTOS是Teltonika Networks公司的一款工业级路由器。 Teltonika Networks RUTOS 7.12.0版本至7.24.1版本存在缓冲区错误漏洞，该漏洞源于modbusgwd对Modbus TCP请求数据处理不当，可能导致远程未经身份验证的攻击者触发堆缓冲区溢出，造成拒绝服务。

CVSS 6.0 · Medium EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Teltonika Networks RUTOS 7.12.0≤ 7.24.1 affected
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I. Basic Information for CVE-2026-18368

Vulnerability Information
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Vulnerability Title
Heap buffer overflow in Modbusgwd
Source: CVE Program / CVE List V5
Vulnerability Description
In Teltonika Networks RUTOS devices, a vulnerability exists in modbusgwd due to improper handling of Modbus TCP request data. A remote, unauthenticated attacker with access to the affected service could trigger a heap-based buffer overflow, resulting in a denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Teltonika Networks RUTOS 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Teltonika Networks RUTOS是Teltonika Networks公司的一款工业级路由器。 Teltonika Networks RUTOS 7.12.0版本至7.24.1版本存在缓冲区错误漏洞，该漏洞源于modbusgwd对Modbus TCP请求数据处理不当，可能导致远程未经身份验证的攻击者触发堆缓冲区溢出，造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Teltonika Networks RUTOS 7.12.0 ~ 7.24.1 -

II. Public POCs for CVE-2026-18368

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III. Intelligence Information for CVE-2026-18368

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Vendor Advisories for CVE-2026-18368 (1)

IV. Related Vulnerabilities

Same product: RUTOS
Same vendor: Teltonika Networks
Same weakness: CWE-122

V. Comments for CVE-2026-18368

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