Vulnerability-Lookup

GHSA-R35R-MRC6-XGFP

Vulnerability from github – Published: 2026-04-16 00:54 – Updated: 2026-04-16 00:54

Details

Inadequate Encryption Strength vulnerability in TP-Link Archer C7 v5 and v5.8 (uhttpd modules) allows Password Recovery Exploitation. The web interface encrypts the admin password client-side using RSA-1024 before sending it to the router during login. An adjacent attacker with the ability to intercept network traffic could potentially perform a brute-force or factorization attack against the 1024-bit RSA key to recover the plaintext administrator password, leading to unauthorized access and compromise of the device configuration. This issue affects Archer C7: through Build 20220715.

Severity ?

5.4 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-5363"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-326"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-16T00:16:29Z",
    "severity": "MODERATE"
  },
  "details": "Inadequate Encryption Strength vulnerability in TP-Link Archer C7 v5 and v5.8 (uhttpd modules) allows Password Recovery Exploitation.\u00a0The web interface encrypts the admin password client-side using RSA-1024 before sending it to the router during login.\u00a0\nAn adjacent attacker with the ability to intercept network traffic could potentially perform a brute-force or factorization attack against the 1024-bit RSA key to recover the plaintext administrator password, leading to unauthorized access and compromise of the device configuration.\u00a0\u00a0This issue affects Archer C7: through Build 20220715.",
  "id": "GHSA-r35r-mrc6-xgfp",
  "modified": "2026-04-16T00:54:04Z",
  "published": "2026-04-16T00:54:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5363"
    },
    {
      "type": "WEB",
      "url": "https://www.tp-link.com/us/support/faq/3562"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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-2026-5363 (GCVE-0-2026-5363)

Vulnerability from cvelistv5 – Published: 2026-04-15 23:45 – Updated: 2026-04-16 23:10 Unsupported When Assigned

Title

Use of weak cryptographic key in TP-Link Archer C7

Summary

Severity ?

5.4 (Medium)


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

CWE

CWE-326 - Inadequate Encryption Strength

Assigner

TPLink

References

URL

Tags

https://www.tp-link.com/us/support/faq/3562/

Impacted products

	Vendor	Product	Version
	TP-Link Systems Inc.	Archer C7 v5 and v5.8	Affected: 0 , ≤ Build 20220715 (custom)

Credits

Sérgio Silva (CYBERS3C)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-5363",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-16T13:17:25.657073Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-16T13:17:48.532Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "uhttpd"
          ],
          "product": "Archer C7 v5 and v5.8",
          "vendor": "TP-Link Systems Inc.",
          "versions": [
            {
              "lessThanOrEqual": "Build 20220715",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "S\u00e9rgio Silva (CYBERS3C)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Inadequate Encryption Strength vulnerability in TP-Link Archer C7 v5 and v5.8 (uhttpd modules) allows Password Recovery Exploitation.\u0026nbsp;The web interface encrypts the admin password client-side using RSA-1024 before sending it to the router during login.\u0026nbsp;\nAn adjacent attacker with the ability to intercept network traffic could potentially perform a brute-force or factorization attack against the 1024-bit RSA key to recover the plaintext administrator password, leading to unauthorized access and compromise of the device configuration.\u0026nbsp;\u0026nbsp;\u003cp\u003eThis issue affects Archer C7: through Build 20220715.\u003c/p\u003e"
            }
          ],
          "value": "Inadequate Encryption Strength vulnerability in TP-Link Archer C7 v5 and v5.8 (uhttpd modules) allows Password Recovery Exploitation.\u00a0The web interface encrypts the admin password client-side using RSA-1024 before sending it to the router during login.\u00a0\nAn adjacent attacker with the ability to intercept network traffic could potentially perform a brute-force or factorization attack against the 1024-bit RSA key to recover the plaintext administrator password, leading to unauthorized access and compromise of the device configuration.\u00a0\u00a0This issue affects Archer C7: through Build 20220715."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-50",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-50 Password Recovery Exploitation"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "HIGH",
            "attackRequirements": "PRESENT",
            "attackVector": "ADJACENT",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "PROOF_OF_CONCEPT",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-326",
              "description": "CWE-326: Inadequate Encryption Strength",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-16T23:10:46.170Z",
        "orgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
        "shortName": "TPLink"
      },
      "references": [
        {
          "url": "https://www.tp-link.com/us/support/faq/3562/"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "tags": [
        "unsupported-when-assigned"
      ],
      "title": "Use of weak cryptographic key in TP-Link Archer C7",
      "x_generator": {
        "engine": "Vulnogram 1.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
    "assignerShortName": "TPLink",
    "cveId": "CVE-2026-5363",
    "datePublished": "2026-04-15T23:45:54.271Z",
    "dateReserved": "2026-04-01T17:38:27.536Z",
    "dateUpdated": "2026-04-16T23:10:46.170Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-R35R-MRC6-XGFP

CVE-2026-5363 (GCVE-0-2026-5363)

Tags

Sightings

Nomenclature