Which versions of QVidium Opera11 are affected by CVE-2026-82971?

QVidium Opera11 network devices (firmware 3.3.2a26-Ax4x-opera11) contain a critical remote command injection vulnerability; publicly available exploit code exists and no patch will ever be issued due…

Is there a public PoC exploit available for CVE-2026-82971?

Yes, a public proof-of-concept exploit is available for CVE-2026-82971. Prioritise patching immediately. EPSS: 1.9%.

How to fix or mitigate CVE-2026-82971?

Within 24 hours, inventory all QVidium Opera11 devices, document their network roles and criticality, and immediately restrict network access to production-critical systems. Within 7 days, implement network segmentation to limit device accessibility, deploy web application firewall rules blocking /cgi-bin/net_tr.cgi requests, and enable monitoring and alerting for exploitation attempts. Within 30 days, develop a hardware replacement strategy prioritizing sensitive network segments and begin phase-one decommissioning, as the vendor will not release security updates.

QVidium Opera11 CVE-2026-82971

Q: What is the CVSS score of CVE-2026-82971?

CVE-2026-82971 has a CVSS 4.0 base score of 9.3 (Critical). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 1.9%.

EUVD-2026-68911 CRITICAL

Command Injection (CWE-77)

2026-08-31 VulDB

GHSA-hgpv-7gcx-jgp2

Command Injection Opera11 Qvidium

9.3

CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY

9.3 CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

vuln.today AI

9.8 CRITICAL

Unauthenticated remote CGI parameter injection with low complexity (PR:N/AC:L) yielding OS command execution, so full C/I/A impact; scope unchanged as commands run on the same device.

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

4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Analysis Updated

Aug 31, 2026 - 23:28 vuln.today

v2 (cvss_changed)

POC Analysis Generated

Aug 31, 2026 - 23:22 vuln.today

Re-analysis Queued

Aug 31, 2026 - 23:22 vuln.today

cvss_changed

CVSS changed

Aug 31, 2026 - 23:22 NVD

10.0 (CRITICAL) 9.3 (CRITICAL)

Analysis Generated

Aug 31, 2026 - 23:00 vuln.today

CVE Published

Aug 31, 2026 - 22:15 cve.org

CRITICAL 10.0

DescriptionCVE.org

A vulnerability was determined in QVidium Opera11 3.3.2a26-Ax4x-opera11. This affects an unknown part of the file /cgi-bin/net_tr.cgi of the component CGI Script. This manipulation of the argument ipaddr causes command injection. The attack may be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor explains: "QVidium has now closed its doors and no longer will be able to sell products or provide support." This vulnerability only affects products that are no longer supported by the maintainer.

AnalysisAI

Command injection in QVidium Opera11 (firmware 3.3.2a26-Ax4x-opera11) lets remote attackers run arbitrary OS commands by manipulating the ipaddr argument of the /cgi-bin/net_tr.cgi CGI script. The flaw is remotely reachable without authentication and publicly available exploit code exists, but it is not listed in CISA KEV. …

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Vulnerability AssessmentAI

Exploitation	Exploitation requires network reachability to the appliance's web server and the ability to send a request to the /cgi-bin/net_tr.cgi CGI script with a malicious ipaddr argument. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	The only scoring signal provided is a CVSS 4.0 base of 9.3 with vector AV:N/AC:L/AT:N/PR:N/UI:N and high vulnerable- and subsequent-system impact (VC/VI/VA/SC/SI/SA:H), i.e. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation	No vendor-released patch identified at time of analysis, and none will be produced because QVidium has closed its doors and ended all product support. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory all QVidium Opera11 devices, document their network roles and criticality, and immediately restrict network access to production-critical systems. …

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