Vulnerability · Published Feb 4, 2026 · Assigned by Hillstone
CVE-2026-1791Arbitrary File Upload Vulnerability in Operation and Maintenance Security Gateway
Low 2.7
In plain English
A low-severity unrestricted file upload in Operation and Maintenance Security Gateway from Hillstone Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Severity (CVSS 3.1)2.7Low
Exploit odds (30 days)0.3%top 71.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Hillstone Networks | Operation and Maintenance Security Gateway | V5.5ST00001B113 |
Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L