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CVE-2026-47116 (GCVE-0-2026-47116)

Vulnerability from nvd – Published: 2026-09-22 19:19 – Updated: 2026-09-23 15:44

Title

LTSecurity LTK3500SF Hard-coded Credentials via Telnet/SSH

Summary

LTSecurity LTK3500SF contains a hard-coded credentials vulnerability where the root and guest account passwords are stored in /etc/shadow as weak hashes recoverable with dictionary-based cracking tools. The recovered credentials authenticate against the device's Telnet and SSH services and grant root-level access to the operating system. These services are not confirmed to start automatically at boot, so exploitation requires Telnet or SSH to be running, whether enabled by the device configuration or started manually.

Severity

9.2 (Critical)


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

9.8 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-23 14:31 UTC

CWE

CWE-798 - Use of Hard-coded Credentials

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://github.com/AndreaLandriscina/Hardcoded-Cr…	technical-descriptionexploit
https://www.vulncheck.com/advisories/ltsecurity-l…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
LTSecurity	LTK3500SF	Affected: AC3F_V1.1.0_build191121 (custom)

Date Public

2026-09-22 00:00

Credits

Andrea Landriscina

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-47116",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-23T14:31:15.173205Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-23T14:36:27.626Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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          "defaultStatus": "unaffected",
          "product": "LTK3500SF",
          "vendor": "LTSecurity",
          "versions": [
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              "version": "AC3F_V1.1.0_build191121",
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            }
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      "descriptions": [
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          "lang": "en",
          "value": "LTSecurity LTK3500SF contains a hard-coded credentials vulnerability where the root and guest account passwords are stored in /etc/shadow as weak hashes recoverable with dictionary-based cracking tools. The recovered credentials authenticate against the device\u0027s Telnet and SSH services and grant root-level access to the operating system. These services are not confirmed to start automatically at boot, so exploitation requires Telnet or SSH to be running, whether enabled by the device configuration or started manually."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 9.2,
            "baseSeverity": "CRITICAL",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
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            "subIntegrityImpact": "NONE",
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            "attackVector": "NETWORK",
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            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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          "tags": [
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          "url": "https://github.com/AndreaLandriscina/Hardcoded-Credentials-in-LTSecurity-LTK3500SF"
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          "tags": [
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          ],
          "url": "https://www.vulncheck.com/advisories/ltsecurity-ltk3500sf-hard-coded-credentials-via-telnet-ssh"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
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      "title": "LTSecurity LTK3500SF Hard-coded Credentials via Telnet/SSH",
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    "datePublished": "2026-09-22T19:19:49.449Z",
    "dateReserved": "2026-05-18T19:22:26.749Z",
    "dateUpdated": "2026-09-23T15:44:58.891Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

CVE-2026-47116 (GCVE-0-2026-47116)

Vulnerability from cvelistv5 – Published: 2026-09-22 19:19 – Updated: 2026-09-23 15:44

Title

LTSecurity LTK3500SF Hard-coded Credentials via Telnet/SSH

Summary

LTSecurity LTK3500SF contains a hard-coded credentials vulnerability where the root and guest account passwords are stored in /etc/shadow as weak hashes recoverable with dictionary-based cracking tools. The recovered credentials authenticate against the device's Telnet and SSH services and grant root-level access to the operating system. These services are not confirmed to start automatically at boot, so exploitation requires Telnet or SSH to be running, whether enabled by the device configuration or started manually.

Severity

9.2 (Critical)


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

9.8 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-23 14:31 UTC

CWE

CWE-798 - Use of Hard-coded Credentials

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://github.com/AndreaLandriscina/Hardcoded-Cr…	technical-descriptionexploit
https://www.vulncheck.com/advisories/ltsecurity-l…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
LTSecurity	LTK3500SF	Affected: AC3F_V1.1.0_build191121 (custom)

Date Public

2026-09-22 00:00

Credits

Andrea Landriscina

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-47116",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-23T14:31:15.173205Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-23T14:36:27.626Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
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          "product": "LTK3500SF",
          "vendor": "LTSecurity",
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            }
          ]
        }
      ],
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          "lang": "en",
          "type": "finder",
          "value": "Andrea Landriscina"
        }
      ],
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      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 9.2,
            "baseSeverity": "CRITICAL",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/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",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
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            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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          "url": "https://github.com/AndreaLandriscina/Hardcoded-Credentials-in-LTSecurity-LTK3500SF"
        },
        {
          "tags": [
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          ],
          "url": "https://www.vulncheck.com/advisories/ltsecurity-ltk3500sf-hard-coded-credentials-via-telnet-ssh"
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      ],
      "source": {
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  },
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}

Find a vulnerability

Search criteria ⓘ Use this form to refine search results.
Full-text search supports keyword queries with ranking and filtering.
You can combine vendor, product, and sources to narrow results.
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2 vulnerabilities by LTSecurity

CVE-2026-47116 (GCVE-0-2026-47116)

CVE-2026-47116 (GCVE-0-2026-47116)

Find a vulnerability

Search criteria ⓘ Use this form to refine search results. Full-text search supports keyword queries with ranking and filtering. You can combine vendor, product, and sources to narrow results. Enable “Apply ordering” to sort by date instead of relevance.

2 vulnerabilities by LTSecurity

CVE-2026-47116 (GCVE-0-2026-47116)

CVE-2026-47116 (GCVE-0-2026-47116)

Search criteria ⓘ Use this form to refine search results.
Full-text search supports keyword queries with ranking and filtering.
You can combine vendor, product, and sources to narrow results.
Enable “Apply ordering” to sort by date instead of relevance.