Vulnerability-Lookup

CVE-2026-18330 (GCVE-0-2026-18330)

Vulnerability from cvelistv5 – Published: 2026-09-03 22:24 – Updated: 2026-10-27 17:39

Title

Hardcoded Shared RSA-1024 Private Key in Web Login in TP-Link RE305 and Archer C7

Summary

A hard-coded cryptographic key vulnerability exists in TP-Link RE305 V3 and Archer C7 V5. The same RSA-1024 private key is stored within firmware configuration files and reused across devices. An attacker who obtains the private key and captures an HTTP Web UI login session may use the key to decrypt the administrator password. Successful exploitation may disclose the administrator password captured from an HTTP login session and compromise session confidentiality.

Severity

6.1 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-04 17:39 UTC

CWE

CWE-321 - Use of hard-coded cryptographic key

Assigner

TPLink CNA under the mitre root

CNA scorecard B 87/100 over 106 records in the last 180 days details

References

5 references

URL	Tags
https://www.tp-link.com/us/support/download/re305…	patch
https://www.tp-link.com/en/support/download/re305…	patch
https://www.tp-link.com/en/support/download/arche…	patch
https://www.tp-link.com/us/support/download/arche…	patch
https://www.tp-link.com/us/support/faq/5362/	vendor-advisory

Impacted products

2 products

Vendor	Product	Version	CPE status
TP-Link Systems Inc.	RE305 v3	Affected: 0 , < 1.1.8 Build 20260921 Rel. 42853 (custom)	guessed
TP-Link Systems Inc.	Archer C7 v5	Affected: 0 , < 1.3.1 Build 20260821 Rel. 41256 (custom)	guessed

Credits

Victor Mota

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-18330

Vulnerability from fkie_nvd - Published: 2026-09-03 23:17 - Updated: 2026-10-27 18:17

Severity

6.1 (Medium) - CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N

Summary

References

	URL	Tags
	f23511db-6c3e-4e32-a477-6aa17d310630	https://www.tp-link.com/en/support/download/archer-c7/v5/#Firmware
	f23511db-6c3e-4e32-a477-6aa17d310630	https://www.tp-link.com/en/support/download/re305/v3/#Firmware
	f23511db-6c3e-4e32-a477-6aa17d310630	https://www.tp-link.com/us/support/download/archer-c7/v5/#Firmware
	f23511db-6c3e-4e32-a477-6aa17d310630	https://www.tp-link.com/us/support/download/re305/v3/#Firmware
	f23511db-6c3e-4e32-a477-6aa17d310630	https://www.tp-link.com/us/support/faq/5362/

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "f23511db-6c3e-4e32-a477-6aa17d310630",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-18330",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-04T17:39:51.418332Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-03T23:17:19.400",
  "references": [
    {
      "source": "f23511db-6c3e-4e32-a477-6aa17d310630",
      "url": "https://www.tp-link.com/en/support/download/archer-c7/v5/#Firmware"
    },
    {
      "source": "f23511db-6c3e-4e32-a477-6aa17d310630",
      "url": "https://www.tp-link.com/en/support/download/re305/v3/#Firmware"
    },
    {
      "source": "f23511db-6c3e-4e32-a477-6aa17d310630",
      "url": "https://www.tp-link.com/us/support/download/archer-c7/v5/#Firmware"
    },
    {
      "source": "f23511db-6c3e-4e32-a477-6aa17d310630",
      "url": "https://www.tp-link.com/us/support/download/re305/v3/#Firmware"
    },
    {
      "source": "f23511db-6c3e-4e32-a477-6aa17d310630",
      "url": "https://www.tp-link.com/us/support/faq/5362/"
    }
  ],
  "sourceIdentifier": "f23511db-6c3e-4e32-a477-6aa17d310630",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-321"
        }
      ],
      "source": "f23511db-6c3e-4e32-a477-6aa17d310630",
      "type": "Secondary"
    }
  ]
}

GHSA-6X43-G54R-9P4X

Vulnerability from github – Published: 2026-09-04 00:31 – Updated: 2026-10-27 18:31

Details

A hard-coded cryptographic key vulnerability exists in the web module of TP-Link Archer AX55 v4. A LAN attacker who captures an HTTP login session may use the known shared RSA private key to decrypt the administrator password; the weakened AES session key further reduces the effort required to compromise session confidentiality.

Successful exploitation may disclose the administrator password captured from an HTTP login session and compromise session confidentiality.

Severity

6.1 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-18330"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-321"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-03T23:17:19Z",
    "severity": "MODERATE"
  },
  "details": "A hard-coded\ncryptographic key vulnerability exists in the\u00a0web module of TP-Link Archer\nAX55 v4. A LAN attacker who captures an HTTP login session may use the known\nshared RSA private key to decrypt the\u00a0administrator\u00a0password; the\nweakened AES session key further reduces the effort\u00a0required\u00a0to\ncompromise session confidentiality.\n\n\n\n\n\nSuccessful\nexploitation may disclose the administrator password captured from an HTTP\nlogin session and compromise session confidentiality.",
  "id": "GHSA-6x43-g54r-9p4x",
  "modified": "2026-10-27T18:31:16Z",
  "published": "2026-09-04T00:31:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18330"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/archer-c7/v5/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/en/support/download/re305/v3/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/download/archer-ax55/v4/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/download/archer-c7/v5/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/download/re305/v3/#Firmware"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/faq/5279"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/faq/5362"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/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.

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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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CVE-2026-18330 (GCVE-0-2026-18330)

FKIE_CVE-2026-18330

GHSA-6X43-G54R-9P4X

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