GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration
Search

Find a vulnerability

Search criteria

    4 vulnerabilities found for TL-MR6400 v5.3 by TP-Link Systems Inc.

    CVE-2026-12339 (GCVE-0-2026-12339)

    Vulnerability from nvd – Published: 2026-08-10 18:20 – Updated: 2026-08-25 23:31
    VLAI
    Title
    Authenticated Arbitrary File Write Vulnerability in multiple devices
    Summary
    A Zip Slip vulnerability in the WebUI ISP Upgrade functionality allows arbitrary file write via a crafted archive containing directory traversal sequences. An authenticated administrator may overwrite arbitrary files on the system.Successful exploitation may allow arbitrary file to be overwritten on the underlying system, affecting system integrity and availability.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 14:44 UTC
    CWE
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Impacted products
    Vendor Product Version
    TP-Link Systems Inc. TL-MR6400 v5.3 Affected: 0 , < (EU)_1.10.0 0.9.1 v0001.0 Build 260613 RC.76099n (custom)
    Create a notification for this product.
    TP-Link Systems Inc. Archer MR600 v2 Affected: 0 , < (EU)_1.10.0 0.9.1 v0001.0 Build 260618 RC.40417n (custom)
    Create a notification for this product.
    TP-Link Systems Inc. Archer MR200 v7 Affected: 0 , < (EU)_1.3.0 0.9.1 v0001.0 Build 260605 Rel.57870n (custom)
    Create a notification for this product.
    TP-Link Systems Inc. TL-MR6400 v8.0 Affected: 0 , < (EU)_1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n (custom)
    Create a notification for this product.
    TP-Link Systems Inc. TL-MR150 v3.20 Affected: 0 , < (EU)_1.3.0 0.9.1 v0001.0 Build 260720 Rel.59727n (custom)
    Create a notification for this product.
    TP-Link Systems Inc. TL-MR100 v3.20 Affected: 0 , < (EU)_1.3.0 0.9.1 v0001.0 Build 260609 Rel.49957n (custom)
    Affected: 0 , < 1.1.0 0.9.1 v0001.0 Build 260609 Rel35479n,  Customized Software for South Korea KT (custom)
    Affected: 0 , < 1.2.0 0.9.1 v0001.0 Build 260609 Rel.36250n, Customized Software for South Korea Telenor (custom)
    Create a notification for this product.
    Show details on NVD website

    {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-12339",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-08-11T14:44:35.924185Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-08-11T14:44:53.124Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "TL-MR6400 v5.3",
              "vendor": "TP-Link Systems Inc.",
              "versions": [
                {
                  "lessThan": "(EU)_1.10.0 0.9.1 v0001.0 Build 260613 RC.76099n",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "Archer MR600 v2",
              "vendor": "TP-Link Systems Inc.",
              "versions": [
                {
                  "lessThan": "(EU)_1.10.0 0.9.1 v0001.0 Build 260618 RC.40417n",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "Archer MR200 v7",
              "vendor": "TP-Link Systems Inc.",
              "versions": [
                {
                  "lessThan": "(EU)_1.3.0 0.9.1 v0001.0 Build 260605 Rel.57870n",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "TL-MR6400 v8.0",
              "vendor": "TP-Link Systems Inc.",
              "versions": [
                {
                  "lessThan": "(EU)_1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "TL-MR150 v3.20",
              "vendor": "TP-Link Systems Inc.",
              "versions": [
                {
                  "lessThan": "(EU)_1.3.0 0.9.1 v0001.0 Build 260720 Rel.59727n",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "TL-MR100 v3.20",
              "vendor": "TP-Link Systems Inc.",
              "versions": [
                {
                  "lessThan": "(EU)_1.3.0 0.9.1 v0001.0 Build 260609 Rel.49957n",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                },
                {
                  "lessThan": "1.1.0 0.9.1 v0001.0 Build 260609 Rel35479n, \u00a0Customized Software for South Korea KT",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                },
                {
                  "lessThan": "1.2.0 0.9.1 v0001.0 Build 260609 Rel.36250n, Customized Software for South Korea Telenor",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "MrBruh"
            },
            {
              "lang": "en",
              "type": "finder",
              "value": "haehet"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "A Zip Slip vulnerability in the WebUI ISP\nUpgrade functionality allows arbitrary file write via a crafted archive\ncontaining directory traversal sequences. An authenticated administrator may\noverwrite arbitrary files on the system.\u003cdiv\u003eSuccessful\nexploitation may allow arbitrary file to be overwritten on the underlying system, affecting system integrity and availability. \u003c/div\u003e"
                }
              ],
              "value": "A Zip Slip vulnerability in the WebUI ISP\nUpgrade functionality allows arbitrary file write via a crafted archive\ncontaining directory traversal sequences. An authenticated administrator may\noverwrite arbitrary files on the system.Successful\nexploitation may allow arbitrary file to be overwritten on the underlying system, affecting system integrity and availability."
            }
          ],
          "impacts": [
            {
              "capecId": "CAPEC-17",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "CAPEC-17 Using Malicious Files"
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "ADJACENT",
                "baseScore": 6.9,
                "baseSeverity": "MEDIUM",
                "exploitMaturity": "NOT_DEFINED",
                "privilegesRequired": "HIGH",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N",
                "version": "4.0",
                "vulnAvailabilityImpact": "LOW",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-22",
                  "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-25T23:31:52.397Z",
            "orgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
            "shortName": "TPLink"
          },
          "references": [
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/en/support/download/archer-mr600/v2/#Firmware"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/en/support/download/archer-mr200/v7/#Firmware"
            },
            {
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://www.tp-link.com/en/support/faq/5237/"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/en/support/download/tl-mr100/v3.20/#Firmware"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/en/support/download/tl-mr150/v3.20/#Firmware"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/en/support/download/tl-mr6400/v8/#Firmware"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/kr/support/download/tl-mr100/v3.20/#Firmware"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Authenticated Arbitrary File Write Vulnerability in multiple devices",
          "x_generator": {
            "engine": "Vulnogram 1.0.2"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
        "assignerShortName": "TPLink",
        "cveId": "CVE-2026-12339",
        "datePublished": "2026-08-10T18:20:50.576Z",
        "dateReserved": "2026-06-15T15:51:52.827Z",
        "dateUpdated": "2026-08-25T23:31:52.397Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }

    CVE-2026-3841 (GCVE-0-2026-3841)

    Vulnerability from nvd – Published: 2026-03-12 17:25 – Updated: 2026-03-13 14:35
    VLAI
    Title
    Command Injection Vulnerability in Telnet CLI on TP-Link TL-MR6400
    Summary
    A command injection vulnerability has been identified in the Telnet command-line interface (CLI) of TP-Link TL-MR6400 v5.3. This issue is caused by insufficient sanitization of data processed during specific CLI operations. An authenticated attacker with elevated privileges may be able to execute arbitrary system commands. Successful exploitation may lead to full device compromise, including potential loss of confidentiality, integrity, and availability.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-03-13 03:55 UTC
    CWE
    • CWE-78 - Improper neutralization of special elements used in an OS command ('OS command injection')
    Impacted products
    Vendor Product Version
    TP-Link Systems Inc. TL-MR6400 v5.3 Affected: 0 , < 1.9.0 Build 260108 (custom)
    Create a notification for this product.
    Credits
    Show details on NVD website

    {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-3841",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-03-13T03:55:49.977698Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-03-13T14:35:24.733Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "platforms": [
                "Linux"
              ],
              "product": "TL-MR6400 v5.3",
              "vendor": "TP-Link Systems Inc.",
              "versions": [
                {
                  "lessThan": "1.9.0 Build 260108",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "MrBruh"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "A command injection vulnerability has been identified in the Telnet command-line interface (CLI) of TP-Link TL-MR6400 v5.3.  This issue is caused by insufficient sanitization of data processed during specific CLI operations.  An authenticated attacker with elevated privileges may be able to execute arbitrary system commands.  Successful exploitation may lead to full device compromise, including potential loss of confidentiality, integrity, and availability."
                }
              ],
              "value": "A command injection vulnerability has been identified in the Telnet command-line interface (CLI) of TP-Link TL-MR6400 v5.3.  This issue is caused by insufficient sanitization of data processed during specific CLI operations.  An authenticated attacker with elevated privileges may be able to execute arbitrary system commands.  Successful exploitation may lead to full device compromise, including potential loss of confidentiality, integrity, and availability."
            }
          ],
          "impacts": [
            {
              "capecId": "CAPEC-88",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "CAPEC-88 OS Command Injection"
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "ADJACENT",
                "baseScore": 8.5,
                "baseSeverity": "HIGH",
                "exploitMaturity": "NOT_DEFINED",
                "privilegesRequired": "HIGH",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:H/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"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-78",
                  "description": "CWE-78 Improper neutralization of special elements used in an OS command (\u0027OS command injection\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-03-12T17:25:58.864Z",
            "orgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
            "shortName": "TPLink"
          },
          "references": [
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware"
            },
            {
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://www.tp-link.com/us/support/faq/5016/"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Command Injection Vulnerability in Telnet CLI on TP-Link TL-MR6400",
          "x_generator": {
            "engine": "Vulnogram 1.0.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
        "assignerShortName": "TPLink",
        "cveId": "CVE-2026-3841",
        "datePublished": "2026-03-12T17:25:58.864Z",
        "dateReserved": "2026-03-09T17:28:57.540Z",
        "dateUpdated": "2026-03-13T14:35:24.733Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }

    CVE-2026-12339 (GCVE-0-2026-12339)

    Vulnerability from cvelistv5 – Published: 2026-08-10 18:20 – Updated: 2026-08-25 23:31
    VLAI
    Title
    Authenticated Arbitrary File Write Vulnerability in multiple devices
    Summary
    A Zip Slip vulnerability in the WebUI ISP Upgrade functionality allows arbitrary file write via a crafted archive containing directory traversal sequences. An authenticated administrator may overwrite arbitrary files on the system.Successful exploitation may allow arbitrary file to be overwritten on the underlying system, affecting system integrity and availability.
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-11 14:44 UTC
    CWE
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Impacted products
    Vendor Product Version
    TP-Link Systems Inc. TL-MR6400 v5.3 Affected: 0 , < (EU)_1.10.0 0.9.1 v0001.0 Build 260613 RC.76099n (custom)
    Create a notification for this product.
    TP-Link Systems Inc. Archer MR600 v2 Affected: 0 , < (EU)_1.10.0 0.9.1 v0001.0 Build 260618 RC.40417n (custom)
    Create a notification for this product.
    TP-Link Systems Inc. Archer MR200 v7 Affected: 0 , < (EU)_1.3.0 0.9.1 v0001.0 Build 260605 Rel.57870n (custom)
    Create a notification for this product.
    TP-Link Systems Inc. TL-MR6400 v8.0 Affected: 0 , < (EU)_1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n (custom)
    Create a notification for this product.
    TP-Link Systems Inc. TL-MR150 v3.20 Affected: 0 , < (EU)_1.3.0 0.9.1 v0001.0 Build 260720 Rel.59727n (custom)
    Create a notification for this product.
    TP-Link Systems Inc. TL-MR100 v3.20 Affected: 0 , < (EU)_1.3.0 0.9.1 v0001.0 Build 260609 Rel.49957n (custom)
    Affected: 0 , < 1.1.0 0.9.1 v0001.0 Build 260609 Rel35479n,  Customized Software for South Korea KT (custom)
    Affected: 0 , < 1.2.0 0.9.1 v0001.0 Build 260609 Rel.36250n, Customized Software for South Korea Telenor (custom)
    Create a notification for this product.
    Show details on NVD website

    {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-12339",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-08-11T14:44:35.924185Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-08-11T14:44:53.124Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "TL-MR6400 v5.3",
              "vendor": "TP-Link Systems Inc.",
              "versions": [
                {
                  "lessThan": "(EU)_1.10.0 0.9.1 v0001.0 Build 260613 RC.76099n",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "Archer MR600 v2",
              "vendor": "TP-Link Systems Inc.",
              "versions": [
                {
                  "lessThan": "(EU)_1.10.0 0.9.1 v0001.0 Build 260618 RC.40417n",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "Archer MR200 v7",
              "vendor": "TP-Link Systems Inc.",
              "versions": [
                {
                  "lessThan": "(EU)_1.3.0 0.9.1 v0001.0 Build 260605 Rel.57870n",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "TL-MR6400 v8.0",
              "vendor": "TP-Link Systems Inc.",
              "versions": [
                {
                  "lessThan": "(EU)_1.5.0 0.9.1 v0001.0 Build 260610 Rel.67978n",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "TL-MR150 v3.20",
              "vendor": "TP-Link Systems Inc.",
              "versions": [
                {
                  "lessThan": "(EU)_1.3.0 0.9.1 v0001.0 Build 260720 Rel.59727n",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "TL-MR100 v3.20",
              "vendor": "TP-Link Systems Inc.",
              "versions": [
                {
                  "lessThan": "(EU)_1.3.0 0.9.1 v0001.0 Build 260609 Rel.49957n",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                },
                {
                  "lessThan": "1.1.0 0.9.1 v0001.0 Build 260609 Rel35479n, \u00a0Customized Software for South Korea KT",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                },
                {
                  "lessThan": "1.2.0 0.9.1 v0001.0 Build 260609 Rel.36250n, Customized Software for South Korea Telenor",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "MrBruh"
            },
            {
              "lang": "en",
              "type": "finder",
              "value": "haehet"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "A Zip Slip vulnerability in the WebUI ISP\nUpgrade functionality allows arbitrary file write via a crafted archive\ncontaining directory traversal sequences. An authenticated administrator may\noverwrite arbitrary files on the system.\u003cdiv\u003eSuccessful\nexploitation may allow arbitrary file to be overwritten on the underlying system, affecting system integrity and availability. \u003c/div\u003e"
                }
              ],
              "value": "A Zip Slip vulnerability in the WebUI ISP\nUpgrade functionality allows arbitrary file write via a crafted archive\ncontaining directory traversal sequences. An authenticated administrator may\noverwrite arbitrary files on the system.Successful\nexploitation may allow arbitrary file to be overwritten on the underlying system, affecting system integrity and availability."
            }
          ],
          "impacts": [
            {
              "capecId": "CAPEC-17",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "CAPEC-17 Using Malicious Files"
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "ADJACENT",
                "baseScore": 6.9,
                "baseSeverity": "MEDIUM",
                "exploitMaturity": "NOT_DEFINED",
                "privilegesRequired": "HIGH",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N",
                "version": "4.0",
                "vulnAvailabilityImpact": "LOW",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-22",
                  "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-25T23:31:52.397Z",
            "orgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
            "shortName": "TPLink"
          },
          "references": [
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/en/support/download/archer-mr600/v2/#Firmware"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/en/support/download/archer-mr200/v7/#Firmware"
            },
            {
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://www.tp-link.com/en/support/faq/5237/"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/en/support/download/tl-mr100/v3.20/#Firmware"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/en/support/download/tl-mr150/v3.20/#Firmware"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/en/support/download/tl-mr6400/v8/#Firmware"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/kr/support/download/tl-mr100/v3.20/#Firmware"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Authenticated Arbitrary File Write Vulnerability in multiple devices",
          "x_generator": {
            "engine": "Vulnogram 1.0.2"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
        "assignerShortName": "TPLink",
        "cveId": "CVE-2026-12339",
        "datePublished": "2026-08-10T18:20:50.576Z",
        "dateReserved": "2026-06-15T15:51:52.827Z",
        "dateUpdated": "2026-08-25T23:31:52.397Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }

    CVE-2026-3841 (GCVE-0-2026-3841)

    Vulnerability from cvelistv5 – Published: 2026-03-12 17:25 – Updated: 2026-03-13 14:35
    VLAI
    Title
    Command Injection Vulnerability in Telnet CLI on TP-Link TL-MR6400
    Summary
    A command injection vulnerability has been identified in the Telnet command-line interface (CLI) of TP-Link TL-MR6400 v5.3. This issue is caused by insufficient sanitization of data processed during specific CLI operations. An authenticated attacker with elevated privileges may be able to execute arbitrary system commands. Successful exploitation may lead to full device compromise, including potential loss of confidentiality, integrity, and availability.
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-03-13 03:55 UTC
    CWE
    • CWE-78 - Improper neutralization of special elements used in an OS command ('OS command injection')
    Impacted products
    Vendor Product Version
    TP-Link Systems Inc. TL-MR6400 v5.3 Affected: 0 , < 1.9.0 Build 260108 (custom)
    Create a notification for this product.
    Credits
    Show details on NVD website

    {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-3841",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-03-13T03:55:49.977698Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-03-13T14:35:24.733Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "platforms": [
                "Linux"
              ],
              "product": "TL-MR6400 v5.3",
              "vendor": "TP-Link Systems Inc.",
              "versions": [
                {
                  "lessThan": "1.9.0 Build 260108",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "MrBruh"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "A command injection vulnerability has been identified in the Telnet command-line interface (CLI) of TP-Link TL-MR6400 v5.3.  This issue is caused by insufficient sanitization of data processed during specific CLI operations.  An authenticated attacker with elevated privileges may be able to execute arbitrary system commands.  Successful exploitation may lead to full device compromise, including potential loss of confidentiality, integrity, and availability."
                }
              ],
              "value": "A command injection vulnerability has been identified in the Telnet command-line interface (CLI) of TP-Link TL-MR6400 v5.3.  This issue is caused by insufficient sanitization of data processed during specific CLI operations.  An authenticated attacker with elevated privileges may be able to execute arbitrary system commands.  Successful exploitation may lead to full device compromise, including potential loss of confidentiality, integrity, and availability."
            }
          ],
          "impacts": [
            {
              "capecId": "CAPEC-88",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "CAPEC-88 OS Command Injection"
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "ADJACENT",
                "baseScore": 8.5,
                "baseSeverity": "HIGH",
                "exploitMaturity": "NOT_DEFINED",
                "privilegesRequired": "HIGH",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:H/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"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-78",
                  "description": "CWE-78 Improper neutralization of special elements used in an OS command (\u0027OS command injection\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-03-12T17:25:58.864Z",
            "orgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
            "shortName": "TPLink"
          },
          "references": [
            {
              "tags": [
                "patch"
              ],
              "url": "https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware"
            },
            {
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://www.tp-link.com/us/support/faq/5016/"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Command Injection Vulnerability in Telnet CLI on TP-Link TL-MR6400",
          "x_generator": {
            "engine": "Vulnogram 1.0.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "f23511db-6c3e-4e32-a477-6aa17d310630",
        "assignerShortName": "TPLink",
        "cveId": "CVE-2026-3841",
        "datePublished": "2026-03-12T17:25:58.864Z",
        "dateReserved": "2026-03-09T17:28:57.540Z",
        "dateUpdated": "2026-03-13T14:35:24.733Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }