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

CVE-2021-20711 (GCVE-0-2021-20711)

Vulnerability from cvelistv5 – Published: 2021-04-26 00:20 – Updated: 2024-08-03 17:53
VLAI
Summary
Aterm WG2600HS firmware Ver1.5.1 and earlier allows an attacker to execute arbitrary OS commands via unspecified vectors.
CWE
  • OS Command Injection
References
Impacted products
Vendor Product Version CPE status
NEC Corporation Aterm WG2600HS Affected: firmware Ver1.5.1 and earlier
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:53:21.236Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://jpn.nec.com/security-info/secinfo/nv21-010.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://jvn.jp/en/jp/JVN29739718/index.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Aterm WG2600HS",
          "vendor": "NEC Corporation",
          "versions": [
            {
              "status": "affected",
              "version": "firmware Ver1.5.1 and earlier"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Aterm WG2600HS firmware Ver1.5.1 and earlier allows an attacker to execute arbitrary OS commands via unspecified vectors."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "OS Command Injection",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-04-26T00:20:45.000Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://jpn.nec.com/security-info/secinfo/nv21-010.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://jvn.jp/en/jp/JVN29739718/index.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "vultures@jpcert.or.jp",
          "ID": "CVE-2021-20711",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Aterm WG2600HS",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "firmware Ver1.5.1 and earlier"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "NEC Corporation"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Aterm WG2600HS firmware Ver1.5.1 and earlier allows an attacker to execute arbitrary OS commands via unspecified vectors."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "OS Command Injection"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://jpn.nec.com/security-info/secinfo/nv21-010.html",
              "refsource": "MISC",
              "url": "https://jpn.nec.com/security-info/secinfo/nv21-010.html"
            },
            {
              "name": "https://jvn.jp/en/jp/JVN29739718/index.html",
              "refsource": "MISC",
              "url": "https://jvn.jp/en/jp/JVN29739718/index.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
    "cveId": "CVE-2021-20711",
    "datePublished": "2021-04-26T00:20:46.000Z",
    "dateReserved": "2020-12-17T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:53:21.236Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-20711",
      "date": "2026-09-17",
      "epss": "0.01359",
      "percentile": "0.70347"
    },
    "fkie_nvd": {
      "configurations": "[{\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:nec:aterm_wg2600hs_firmware:*:*:*:*:*:*:*:*\", \"versionEndIncluding\": \"1.5.1\", \"matchCriteriaId\": \"98011875-167E-4921-858E-C30AF5E9DB76\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:nec:aterm_wg2600hs:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"623C9C7B-C947-49A8-9C1D-20B23FDA73ED\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"Aterm WG2600HS firmware Ver1.5.1 and earlier allows an attacker to execute arbitrary OS commands via unspecified vectors.\"}, {\"lang\": \"es\", \"value\": \"Un firmware Aterm WG2600HS versiones Ver1.5.1 y anteriores, permite a un atacante ejecutar comandos arbitrarios del Sistema Operativo por medio de vectores no especificados\"}]",
      "id": "CVE-2021-20711",
      "lastModified": "2024-11-21T05:47:03.403",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 9.8, \"baseSeverity\": \"CRITICAL\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 5.9}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:C/I:C/A:C\", \"baseScore\": 10.0, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"COMPLETE\", \"integrityImpact\": \"COMPLETE\", \"availabilityImpact\": \"COMPLETE\"}, \"baseSeverity\": \"HIGH\", \"exploitabilityScore\": 10.0, \"impactScore\": 10.0, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2021-04-26T01:15:08.030",
      "references": "[{\"url\": \"https://jpn.nec.com/security-info/secinfo/nv21-010.html\", \"source\": \"vultures@jpcert.or.jp\", \"tags\": [\"Mitigation\", \"Vendor Advisory\"]}, {\"url\": \"https://jvn.jp/en/jp/JVN29739718/index.html\", \"source\": \"vultures@jpcert.or.jp\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://jpn.nec.com/security-info/secinfo/nv21-010.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mitigation\", \"Vendor Advisory\"]}, {\"url\": \"https://jvn.jp/en/jp/JVN29739718/index.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}]",
      "sourceIdentifier": "vultures@jpcert.or.jp",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-78\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-20711\",\"sourceIdentifier\":\"vultures@jpcert.or.jp\",\"published\":\"2021-04-26T01:15:08.030\",\"lastModified\":\"2024-11-21T05:47:03.403\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Aterm WG2600HS firmware Ver1.5.1 and earlier allows an attacker to execute arbitrary OS commands via unspecified vectors.\"},{\"lang\":\"es\",\"value\":\"Un firmware Aterm WG2600HS versiones Ver1.5.1 y anteriores, permite a un atacante ejecutar comandos arbitrarios del Sistema Operativo por medio de vectores no especificados\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:C/I:C/A:C\",\"baseScore\":10.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"COMPLETE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":10.0,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-78\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:nec:aterm_wg2600hs_firmware:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"1.5.1\",\"matchCriteriaId\":\"98011875-167E-4921-858E-C30AF5E9DB76\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:nec:aterm_wg2600hs:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"623C9C7B-C947-49A8-9C1D-20B23FDA73ED\"}]}]}],\"references\":[{\"url\":\"https://jpn.nec.com/security-info/secinfo/nv21-010.html\",\"source\":\"vultures@jpcert.or.jp\",\"tags\":[\"Mitigation\",\"Vendor Advisory\"]},{\"url\":\"https://jvn.jp/en/jp/JVN29739718/index.html\",\"source\":\"vultures@jpcert.or.jp\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://jpn.nec.com/security-info/secinfo/nv21-010.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mitigation\",\"Vendor Advisory\"]},{\"url\":\"https://jvn.jp/en/jp/JVN29739718/index.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2026-03-27T15:00:37+00:00",
      "cve": "CVE-2021-20711",
      "id": "CVE-2021-20711",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2021-20711",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-20711.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

Related by attack behaviour

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.


Loading…