CVE-2026-1791

Arbitrary File Upload Vulnerability in Operation and Maintenance Security Gateway

CVSS 2.7 LOWEPSS 0.3%CWE-434

Vexday Risk Score

8Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 2.7EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

04 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L

Affected products

Hillstone Networks · Operation and Maintenance Security Gateway

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References

https://www.hillstonenet.com.cn/security-notification/2025/12/08/wgscld/