Vulnerability-Lookup

FKIE_CVE-2021-31624

Vulnerability from fkie_nvd - Published: 2021-10-29 11:15 - Updated: 2026-07-09 01:16

Severity

8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

Buffer Overflow vulnerability in Tenda AC9 V1.0 through V15.03.05.19(6318), and AC9 V3.0 V15.03.06.42_multi, allows attackers to execute arbitrary code via the urls parameter.

References

	URL	Tags
	cve@mitre.org	https://github.com/Lyc-heng/routers/blob/main/routers/stack2.md	Exploit, Third Party Advisory
	af854a3a-2127-422b-91ae-364da2661108	https://github.com/Lyc-heng/routers/blob/main/routers/stack2.md	Exploit, Third Party Advisory

Impacted products

Vendor	Product	Version
tendacn	ac9_firmware	*
tendacn	ac9	3.0
tendacn	ac9_firmware	*
tendacn	ac9	1.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
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          "cpeMatch": [
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              "criteria": "cpe:2.3:o:tendacn:ac9_firmware:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BB151239-C968-4822-BC79-E8F44055D3FA",
              "versionEndIncluding": "15.03.06.42_multi",
              "vulnerable": true
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          ],
          "negate": false,
          "operator": "OR"
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              "versionEndIncluding": "15.03.05.19\\(6318\\)",
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            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
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              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
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      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Buffer Overflow vulnerability in Tenda AC9 V1.0 through V15.03.05.19(6318), and AC9 V3.0 V15.03.06.42_multi, allows attackers to execute arbitrary code via the urls parameter."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de desbordamiento del b\u00fafer en Tenda versiones AC9 V1.0 hasta V15.03.05.19(6318), y AC9 V3.0 V15.03.06.42_multi, permite a atacantes ejecutar c\u00f3digo arbitrario por medio del par\u00e1metro urls"
    }
  ],
  "id": "CVE-2021-31624",
  "lastModified": "2026-07-09T01:16:52.767",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "ADJACENT_NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.8,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:A/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 6.5,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-10-29T11:15:08.383",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/Lyc-heng/routers/blob/main/routers/stack2.md"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://github.com/Lyc-heng/routers/blob/main/routers/stack2.md"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-31624 (GCVE-0-2021-31624)

Vulnerability from cvelistv5 – Published: 2021-10-29 10:25 – Updated: 2026-07-09 00:13

Summary

Buffer Overflow vulnerability in Tenda AC9 V1.0 through V15.03.05.19(6318), and AC9 V3.0 V15.03.06.42_multi, allows attackers to execute arbitrary code via the urls parameter.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

1 reference

URL	Tags
https://github.com/Lyc-heng/routers/blob/main/rou…

Show details on NVD website

JSON

To clipboard

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        "providerMetadata": {
          "dateUpdated": "2026-07-09T00:13:24.202Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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            "tags": [
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              "x_transferred"
            ],
            "url": "https://github.com/Lyc-heng/routers/blob/main/routers/stack2.md"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "vendor": "n/a",
          "versions": [
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        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "description": "n/a",
              "lang": "en",
              "type": "text"
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        }
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      "providerMetadata": {
        "dateUpdated": "2026-07-04T23:34:19.972Z",
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      "references": [
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          "url": "https://github.com/Lyc-heng/routers/blob/main/routers/stack2.md"
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          "ASSIGNER": "cve@mitre.org",
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          "STATE": "PUBLIC"
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            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
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                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
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              "url": "http://tenda.com"
            },
            {
              "name": "https://github.com/Lyc-heng/routers/blob/main/routers/stack2.md",
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              "url": "https://github.com/Lyc-heng/routers/blob/main/routers/stack2.md"
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}

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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FKIE_CVE-2021-31624

CVE-2021-31624 (GCVE-0-2021-31624)

Tags

Sightings

Nomenclature

Related by attack behaviour