Vulnerability-Lookup

CVE-2026-77966 (GCVE-0-2026-77966)

Vulnerability from cvelistv5 – Published: 2026-08-31 15:33 – Updated: 2026-09-01 16:28

Title

Ebyte NA111-M Missing Authorization

Summary

The affected Ebyte product does not provide separation between limited and administrative management functions. A low privileged authenticated attacker could access security sensitive configuration functions and modify settings that affect the confidentiality, integrity, or availability of the device.

Severity

8.8 (High)


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

8.7 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-31 15:49 UTC

CWE

CWE-862 - Missing Authorization

Assigner

icscert icscert root

References

2 references

URL	Tags
https://www.cisa.gov/news-events/ics-advisories/i…
https://github.com/cisagov/CSAF/blob/develop/csaf…

Impacted products

1 product

Vendor	Product	Version	CPE status
Ebyte	Ebyte NA111-M Firmware	Affected: 9013-2-17	guessed

Credits

Jithin Nambiar reported this vulnerability to CISA.

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-77966

Vulnerability from fkie_nvd - Published: 2026-08-31 16:19 - Updated: 2026-09-01 17:17

Severity

8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	ics-cert@hq.dhs.gov	https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-237-06.json
	ics-cert@hq.dhs.gov	https://www.cisa.gov/news-events/ics-advisories/icsa-26-237-06

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Ebyte NA111-M Firmware",
          "vendor": "Ebyte",
          "versions": [
            {
              "status": "affected",
              "version": "9013-2-17"
            }
          ]
        }
      ],
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    }
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  "id": "CVE-2026-77966",
  "lastModified": "2026-09-01T17:17:35.130",
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    },
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}

GHSA-95VR-MJHG-W4W3

Vulnerability from github – Published: 2026-08-31 18:31 – Updated: 2026-08-31 18:31

Details

The affected Ebyte

product does not provide separation between limited and administrative management functions. A low privileged authenticated attacker could access security sensitive configuration functions and modify settings that affect the confidentiality, integrity, or availability of the device.

Severity

8.8 (High)


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

8.7 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-77966"
  ],
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      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-31T16:19:13Z",
    "severity": "HIGH"
  },
  "details": "The affected\u00a0Ebyte \n\nproduct\u00a0does not provide separation between limited and administrative \nmanagement functions. A low privileged authenticated attacker could \naccess security sensitive configuration functions and modify settings \nthat affect the confidentiality, integrity, or availability of the \ndevice.",
  "id": "GHSA-95vr-mjhg-w4w3",
  "modified": "2026-08-31T18:31:29Z",
  "published": "2026-08-31T18:31:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77966"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-237-06.json"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-237-06"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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"
    }
  ]
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-77966 (GCVE-0-2026-77966)

FKIE_CVE-2026-77966

GHSA-95VR-MJHG-W4W3

Tags

Sightings

Nomenclature