Vulnerability-Lookup

GHSA-7PRP-VRQQ-87RQ

Vulnerability from github – Published: 2026-11-02 21:31 – Updated: 2026-11-02 21:31

Details

Nexbox A95X TV boxes built on the Amlogic S905X platform contain an unauthenticated console exposed via an internal UART header on the PCB that allows physical attackers to obtain an interactive shell as uid 2000 (system) without any credentials. Attackers with physical access and a USB-to-TTL adapter can leverage this shell to reach the pppoe_wrapper vendor daemon, which contains an OS command injection vulnerability executed as root, resulting in full root-level compromise of the device.

Severity

6.8 (Medium)


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

7.0 (High)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-119740"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-11-02T20:17:38Z",
    "severity": "HIGH"
  },
  "details": "Nexbox A95X TV boxes built on the Amlogic S905X platform contain an unauthenticated console exposed via an internal UART header on the PCB that allows physical attackers to obtain an interactive shell as uid 2000 (system) without any credentials. Attackers with physical access and a USB-to-TTL adapter can leverage this shell to reach the pppoe_wrapper vendor daemon, which contains an OS command injection vulnerability executed as root, resulting in full root-level compromise of the device.",
  "id": "GHSA-7prp-vrqq-87rq",
  "modified": "2026-11-02T21:31:59Z",
  "published": "2026-11-02T21:31:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119740"
    },
    {
      "type": "WEB",
      "url": "https://mstreet97.github.io/security-research/vulnerability-disclosure/embedded/cve/2026/10/29/From-UART-to-root-android-version.html"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/nexbox-a95x-amlogic-s905x-uart-unauthenticated-console-access"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-119740 (GCVE-0-2026-119740)

Vulnerability from cvelistv5 – Published: 2026-11-02 19:54 – Updated: 2026-11-03 18:33

Title

Nexbox A95X Amlogic S905X UART Unauthenticated Console Access

Summary

Severity

7 (High)


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

6.8 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-11-03 17:56 UTC

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 7380 records in the last 180 days details

References

2 references

URL	Tags
https://mstreet97.github.io/security-research/vul…	technical-descriptionexploit
https://www.vulncheck.com/advisories/nexbox-a95x-…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Nexbox	A95X	Affected: A7_S905X_v2_2 20160713 (custom)

Date Public

2026-10-29 00:00

Credits

Matteo Strada (mstreet)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-119740",
                "options": [
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                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-11-03T17:56:06.428530Z",
                "version": "2.0.3"
              },
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        "providerMetadata": {
          "dateUpdated": "2026-11-03T18:33:41.731Z",
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          "shortName": "CISA-ADP"
        },
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    ],
    "cna": {
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          "versions": [
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      "descriptions": [
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        }
      ],
      "metrics": [
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            "Recovery": "NOT_DEFINED",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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        },
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    "dateReserved": "2026-10-30T15:31:52.079Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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