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CVE-2026-1791— Arbitrary File Upload Vulnerability in Operation and Maintenance Security Gateway

Quick assessment

Affected
Hillstone Networks Operation and Maintenance Security Gateway
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.

Hillstone Operation and Maintenance Security Gateway是中国山石网科（Hillstone）公司的一个网络操作和维护管理平台。 Hillstone Operation and Maintenance Security Gateway V5.5ST00001B113版本存在安全漏洞，该漏洞源于上传危险类型文件不受限制，可能导致上传Web Shell。

CVSS 2.7 · Low EPSS 0.35% · P29
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I. Basic Information for CVE-2026-1791

Vulnerability Information
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Vulnerability Title
Arbitrary File Upload Vulnerability in Operation and Maintenance Security Gateway
Source: CVE Program / CVE List V5
Vulnerability Description
Unrestricted Upload of File with Dangerous Type vulnerability in Hillstone Networks Operation and Maintenance Security Gateway on Linux allows Upload a Web Shell to a Web Server.This issue affects Operation and Maintenance Security Gateway: V5.5ST00001B113.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
Hillstone Operation and Maintenance Security Gateway 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hillstone Operation and Maintenance Security Gateway是中国山石网科（Hillstone）公司的一个网络操作和维护管理平台。 Hillstone Operation and Maintenance Security Gateway V5.5ST00001B113版本存在安全漏洞，该漏洞源于上传危险类型文件不受限制，可能导致上传Web Shell。
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
Hillstone Networks Operation and Maintenance Security Gateway V5.5ST00001B113 -

II. Public POCs for CVE-2026-1791

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III. Intelligence Information for CVE-2026-1791

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IV. Related Vulnerabilities

Same vendor: Hillstone Networks
Same weakness: CWE-434