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CVE-2026-82971 – Unauthenticated Remote Command Execution – QVidium Opera11 (3.3.2a26-Ax4x-opera11)

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Summary

CVE-2026-82971 is a critical, unauthenticated OS command injection vulnerability in QVidium Opera11 firmware version 3.3.2a26-Ax4x-opera11. The flaw resides in the /cgi-bin/net_tr.cgi CGI script and allows a remote, unauthenticated attacker to execute arbitrary commands on the device by manipulating the ipaddr parameter. The issue has been assigned a CVSS score of 10.0 (Critical), and a public exploit is available; QVidium has ceased operations and is not expected to release a fix.

Technical details

  • Root cause: Improper sanitization of user-supplied input in the ipaddr parameter processed by the /cgi-bin/net_tr.cgi CGI script, allowing shell metacharacters to be injected and executed by the underlying OS.
  • Trigger conditions: An attacker sends a crafted HTTP request to the net_tr.cgi endpoint with a malicious ipaddr value; no authentication or user interaction is required.
  • Attack vector: Network — the vulnerable CGI endpoint is exposed over the device’s management web interface.
  • Impact: Full compromise of confidentiality, integrity, and availability of the device, including arbitrary command execution with the privileges of the web service process.

Affected software

  • QVidium Opera11 firmware, version 3.3.2a26-Ax4x-opera11

Severity

  • CVSS v3.1 Base Score: 10.0 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: No vendor patch is available. QVidium has ceased operations and no longer provides support or updates for this product.
  • Workarounds/network mitigations:
    • Remove affected devices from direct internet exposure; restrict access to the management web interface (including /cgi-bin/net_tr.cgi) to trusted internal networks only, via firewall rules or network segmentation.
    • Place devices behind a VPN or access-controlled gateway rather than exposing the CGI interface publicly.
    • Monitor for unusual requests to /cgi-bin/net_tr.cgi or anomalous outbound connections/process activity on the device.
    • Given the vendor’s closure and lack of ongoing support, plan for replacement of affected devices with a supported alternative.

How IONIX identifies potentially affected assets

IONIX matches the following signals against data already collected when it crawled the asset; identifying the technology sends no request beyond that crawl.

  • Page title: QVidium Management

References

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