CVE intelligence and bounded remediation

CVE-2023-33274 — Voltronicpower Snmp Web Pro security vulnerability

Critical CVSS 9.8

The authentication mechanism in PowerShield SNMP Web Pro 1.1 contains a vulnerability that allows unauthenticated users to directly access Common Gateway Interface (CGI) scripts without proper identification or authorization. This vulnerability arises from a lack of proper cookie verification and affects all instances of SNMP Web Pro 1.1 without HTTP Digest authentication enabled, regardless of the password used for the web interface.

Severity
Critical
CVSS
9.8 (3.1)
Published
2023-07-12
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-287

Affected products

  • voltronicpower / snmp_web_pro / 1.1

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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