Vulnerability-Lookup

GHSA-FFQ4-J9J8-23G6

Vulnerability from github – Published: 2026-03-17 18:30 – Updated: 2026-03-23 21:30

Details

The GL-iNet Comet (GL-RM1) KVM does not require authentication on the UART serial console. This attack requires physically opening the device and connecting to the UART pins.

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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-32291"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-17T18:16:16Z",
    "severity": "HIGH"
  },
  "details": "The GL-iNet Comet (GL-RM1) KVM does not require authentication on the UART serial console. This attack requires physically opening the device and connecting to the UART pins.",
  "id": "GHSA-ffq4-j9j8-23g6",
  "modified": "2026-03-23T21:30:49Z",
  "published": "2026-03-17T18:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32291"
    },
    {
      "type": "WEB",
      "url": "https://dl.gl-inet.com/release/kvm/release/RM1/1.8.2"
    },
    {
      "type": "WEB",
      "url": "https://eclypsium.com/blog/your-kvm-is-the-weak-link-how-30-dollar-devices-can-own-your-entire-network"
    },
    {
      "type": "WEB",
      "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-26-076-01.json"
    },
    {
      "type": "WEB",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-32291"
    }
  ],
  "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-2026-32291 (GCVE-0-2026-32291)

Vulnerability from cvelistv5 – Published: 2026-03-17 17:18 – Updated: 2026-03-23 19:34

Title

GL-iNet Comet (GL-RM1) KVM unauthenticated root access via UART serial console

Summary

The GL-iNet Comet (GL-RM1) KVM before 1.8.2 does not require authentication on the UART serial console. This attack requires physically opening the device and connecting to the UART pins.

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-cg (v2.0.3)

Decision recorded 2026-03-10 17:28 UTC

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

cisa-cg CISA root

References

4 references

URL	Tags
https://eclypsium.com/blog/your-kvm-is-the-weak-l…
https://www.cve.org/CVERecord?id=CVE-2026-32291
https://raw.githubusercontent.com/cisagov/CSAF/de…
https://dl.gl-inet.com/release/kvm/release/RM1/1.8.2	patch

Impacted products

1 product

Vendor	Product	Version
GL-iNet	Comet KVM	Affected: 0 , < 1.8.2 (custom) Unaffected: 1.8.2

Date Public

2026-03-17 00:00

Credits

Reynaldo Vasquez Garcia, Eclypsium

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-32291",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-17T18:12:47.629054Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-17T18:12:50.187Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Comet KVM",
          "vendor": "GL-iNet",
          "versions": [
            {
              "lessThan": "1.8.2",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "status": "unaffected",
              "version": "1.8.2"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Reynaldo Vasquez Garcia, Eclypsium"
        }
      ],
      "datePublic": "2026-03-17T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The GL-iNet Comet (GL-RM1) KVM before 1.8.2 does not require authentication on the UART serial console. This attack requires physically opening the device and connecting to the UART pins."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "PHYSICAL",
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
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        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "PHYSICAL",
            "availabilityImpact": "HIGH",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        {
          "other": {
            "content": {
              "id": "CVE-2026-32291",
              "options": [
                {
                  "Exploitation": "poc"
                },
                {
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                },
                {
                  "Technical Impact": "total"
                }
              ],
              "role": "CISA Coordinator",
              "timestamp": "2026-03-10T17:28:38.117871Z",
              "version": "2.0.3"
            },
            "type": "ssvc"
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      ],
      "problemTypes": [
        {
          "descriptions": [
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              "description": "CWE-306 Missing Authentication for Critical Function",
              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2026-03-23T19:34:20.347Z",
        "orgId": "9119a7d8-5eab-497f-8521-727c672e3725",
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      "references": [
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          "name": "url",
          "url": "https://eclypsium.com/blog/your-kvm-is-the-weak-link-how-30-dollar-devices-can-own-your-entire-network/"
        },
        {
          "name": "url",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-32291"
        },
        {
          "name": "url",
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        },
        {
          "name": "url",
          "tags": [
            "patch"
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          "url": "https://dl.gl-inet.com/release/kvm/release/RM1/1.8.2"
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      "title": "GL-iNet Comet (GL-RM1) KVM unauthenticated root access via UART serial console"
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    "datePublished": "2026-03-17T17:18:34.947Z",
    "dateReserved": "2026-03-11T18:26:10.038Z",
    "dateUpdated": "2026-03-23T19:34:20.347Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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GHSA-FFQ4-J9J8-23G6

CVE-2026-32291 (GCVE-0-2026-32291)

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