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CVE Record

CVE-2026-82971: QVidium Opera11 CGI Script net_tr.cgi command injection

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.

CriticalCVSS 10Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

A remotely reachable Opera11 device running the identified firmware may allow an unauthenticated attacker to execute operating-system commands through a network diagnostic CGI endpoint. Successful compromise could expose or alter data, disrupt service, and affect connected systems. The product is unsupported because QVidium has closed, so continued operation creates substantial business risk.

Executive priority

Immediate. Locate and isolate affected appliances, then prioritize replacement rather than accepting prolonged exposure. The combination of unauthenticated remote command injection, maximum supplied severity, public exploit disclosure, and an unsupported vendor makes patch-dependent risk management unreliable. Escalate any internet-exposed instance for urgent incident review.

Technical view

CVE-2026-82971 is command injection in /cgi-bin/net_tr.cgi on QVidium Opera11 firmware 3.3.2a26-Ax4x-opera11. Unsafely handled ipaddr input can reach command execution remotely without privileges or user interaction. The supplied CVSS 4.0 score is 10.0, with high confidentiality, integrity, and availability impacts across vulnerable and subsequent systems.

Likely exposure

Exposure is most likely where affected Opera11 appliances remain deployed and the CGI management interface is reachable from untrusted networks. Internet accessibility materially increases risk, but internal access can also enable compromise. The bundle identifies only firmware 3.3.2a26-Ax4x-opera11; evidence does not establish whether other versions are affected.

Exploitation context

A public exploit reference is listed, and the CVSS vector marks exploit maturity as proof-of-concept. However, the CVE is not listed as KEV in the supplied bundle, and no cited evidence confirms active exploitation. Treat exploitation as feasible and publicly documented, not confirmed in-the-wild activity.

Researcher notes

The source bundle maps the issue to CWE-74 and CWE-77 and identifies ipaddr as the manipulated parameter. The affected code section is otherwise described as unknown. No patch, fixed version, authentication nuance, execution privilege, observed indicators, or confirmed exploitation campaign is established here. Avoid extrapolating impact to unlisted firmware without further evidence.

Mitigation direction

  • Inventory QVidium Opera11 devices and identify firmware versions immediately.
  • Remove affected devices from internet and other untrusted network access.
  • Restrict CGI management access to essential, authenticated administrative networks.
  • Retire or replace affected appliances because the vendor no longer provides support.
  • Check available vendor or trusted integrator guidance; the sources name no patch.

Validation and detection

  • Confirm whether any Opera11 device runs firmware 3.3.2a26-Ax4x-opera11.
  • Verify external and internal reachability of the device management interface.
  • Review proxy, firewall, and device logs for unusual net_tr.cgi requests.
  • Inspect affected appliances for unexpected configuration changes, processes, or outbound connections.
  • Confirm compensating controls block untrusted access after mitigation.
Prepared
Confidence
high
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-74: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cwe · medium confidence lookup

CWE-77: Command execution behavior lookup

Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-82971 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Critical
CVSS
10 (4.0)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

4CVSS vectors
6Timeline events
1ADP providers
6Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: pocAutomatable: yesTechnical Impact: total

CVSS vector scores

4 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
10CVSS 4.0CriticalCVSS: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——VulDB
10CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R3.96VulDB
10CVSS 3.0CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R3.96VulDB
10CVSS 2.0CriticalAV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR1010VulDB

Vulnerability scoring details

Base CVSS 4.0 score

10Critical
CVSS 4.0 vector shape for CVE-2026-82971Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timelineVulDB

    Advisory disclosed

  2. Source timelineVulDB

    VulDB entry created

  3. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  4. Source timelineVulDB

    VulDB entry last update

  5. CVE publishedCVE Program

    The CVE record was published.

  6. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
QVidiumOpera113.3.2a26-Ax4x-opera11Listed
Weakness

CWE details

CWE-74CWE-77

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-74 · source CWE mapping

CWE mapping pending import

This CVE carries a CWE mapping that will resolve to a full Glexia CWE intelligence page after the official CWE import is complete.

Open CWE intelligenceSame-CWE CVEs
CWE-77 · source CWE mapping

CWE mapping pending import

This CVE carries a CWE mapping that will resolve to a full Glexia CWE intelligence page after the official CWE import is complete.

Open CWE intelligenceSame-CWE CVEs