CVE-2026-44402Public exploitNetwork attack vector

Unauthenticated root command execution via firmware upload

Published Sep 4, 2026 · Updated Sep 4, 2026

Unrestricted file upload in Voltronic Power SNMP Web Pro 1.1 allows remote attackers to execute arbitrary commands as root. The unauthenticated upload.cgi firmware workflow accepts an attacker-controlled tar archive, extracts its unchecked contents under /root, and runs the archive's install.sh with root privileges. A manipulated or invalid session cookie bypasses the login gate, allowing arbitrary executable files to be placed in the CGI directory and invoked remotely.

CVSS severity9.3
Critical
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Voltronic Power SNMP Web Pro 1.1 allows remote attackers to execute arbitrary commands as root. The unauthenticated upload.cgi firmware workflow accepts an attacker-controlled tar archive, extracts its unchecked contents under /root, and runs the archive's install.sh with root privileges. A manipulated or invalid session cookie bypasses the login gate, allowing arbitrary executable files to be placed in the CGI directory and invoked remotely.

The record

CVE
CVE-2026-44402
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
Voltronic Power Technology Corp.
Product
SNMP Web Pro
Classifications
CWE-434, T1190, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Voltronic Power Technology Corp. · SNMP Web Proversion=1.1

Published CVSS scores

9.8VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application
T1059.004Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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