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CVE-2021-22982

Status: ModifiedHigh (7.2)—

On BIG-IP DNS and GTM version 13.1.x before 13.1.0.4, and all versions of 12.1.x and 11.6.x, big3d does not securely handle and parse certain payloads resulting in a buffer overflow. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (2)

F5 — Big-ip Domain Name SystemF5 — Big-ip Global Traffic Manager

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-22982",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.2,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.2
      }
    ]
  },
  "affected": [
    {
      "source": "f5sirt@f5.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "BIG-IP DNS and GTM",
          "versions": [
            {
              "status": "affected",
              "version": "13.1.x before 13.1.0.4, and all versions of 12.1.x and 11.6.x"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-02-12T18:15:12.860",
  "references": [
    {
      "url": "https://support.f5.com/csp/article/K72708443",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "f5sirt@f5.com"
    },
    {
      "url": "https://support.f5.com/csp/article/K72708443",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "On BIG-IP DNS and GTM version 13.1.x before 13.1.0.4, and all versions of 12.1.x and 11.6.x, big3d does not securely handle and parse certain payloads resulting in a buffer overflow. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated."
    },
    {
      "lang": "es",
      "value": "En BIG-IP DNS y GTM versiones 13.1.x anteriores a 13.1.0.4, y en todas las versiones de 12.1.x y 11.6.x, big3d no maneja ni analiza de forma segura determinadas cargas útiles, resultando en un desbordamiento del búfer. Nota: No son evaluadas las versiones de software que han alcanzado End of Software Development (EoSD)"
    }
  ],
  "lastModified": "2026-06-17T03:38:08.997",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "55C2EC23-E78F-4447-BACF-21FC36ABF155",
              "versionEndIncluding": "12.1.5",
              "versionStartIncluding": "12.1.0"
            },
            {
              "criteria": "cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B9A203E7-AF96-4160-88D8-B9FA5AEB039C",
              "versionEndExcluding": "13.1.0.4",
              "versionStartIncluding": "13.1.0"
            },
            {
              "criteria": "cpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CD3D5803-35A0-4FF7-9AD3-E345C53A18FC",
              "versionEndIncluding": "11.6.5",
              "versionStartIncluding": "11.6.1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "f5sirt@f5.com"
}