CVE-2026-78796

Status: DeferredCritical (9.8)—

Severity9.8Critical · CVSS 3.1

Exploitation probability0.52 %higher than 43% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

An issue in Netcore B11 Enterprise-level full Gigabit 9-port shop wireless router v1.3.241114.024540 and before allows a remote attacker to execute arbitrary code via the www\cgi-bin\upgrade file

CVSS

Base score: 9.8
Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.52 %
Percentile among all scored CVEs: 43
Score date: 10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1190 Exploit Public-Facing Applicationinitial access92 %
Primary impactT1059 Command and Scripting Interpreterexecution80 %

Vector AV:N/PR:N/UI:N sin autenticación ni interacción; la descripción indica ejecución de código arbitrario vía el fichero upgrade y el CWE-78 apunta a inyección de comandos.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

ATT&CK mitigations that cover these techniques

Privileged Account Management Vulnerability Scanning Restrict Web-Based Content Network Segmentation Limit Software Installation Limit Access to Resource Over Network

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Netcore — B11 Enterprise Wireless Router^AI

CWEs

CWE-78

References

Show 3 references

Raw JSON (NVD)

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{
  "id": "CVE-2026-78796",
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "poc"
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            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
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          ],
          "version": "2.0.3",
          "timestamp": "2026-10-19T17:48:48.307549Z"
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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  "published": "2026-10-09T15:17:15.947",
  "references": [
    {
      "url": "https://github.com/PRISMI-Team/VulnDisclos/blob/main/Routers/Netcore/unauthorized-rce.md",
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    }
  ],
  "lastModified": "2026-10-19T19:18:08.737",
  "sourceIdentifier": "cve@mitre.org"
}