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CVE-2026-16340

Status: ReceivedCritical (9.8)—

IBM DataPower Gateway 10.5.0.0 through 10.5.0.22, 10.6.1 through 10.6.6, 10.6.0.0 through 10.6.0.10, and 11.0.0.0 through 11.0.0.2 could allow a remote attacker to execute arbitrary code due to an out-of-bounds write in the RFC2047 encoded-word parser.

CVSS

Exploitation probability (EPSS)

FIRST hasn't scored this CVE yet (usual for very recent or rejected CVEs).

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).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

Vector CVSS AV:N/AC:L/PR:N/UI:N indica explotación remota sin privilegios ni interacción: T1190. CWE-787 (out-of-bounds write) en parser RFC2047 permite ejecución arbitraria de código remota (T1059). Producto vulnerable: IBM DataPower Gateway.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Privileged Account ManagementVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software InstallationLimit Access to Resource Over Network

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

IBM — Datapower GatewayAI

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-16340",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-16340",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-08T15:31:47.022849Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@us.ibm.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@us.ibm.com",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:datapower_gateway_106cd:10.6.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:datapower_gateway_106cd:10.6.6:*:*:*:*:*:*:*"
          ],
          "vendor": "IBM",
          "product": "DataPower Gateway 10.6CD",
          "versions": [
            {
              "status": "affected",
              "version": "10.6.1",
              "versionType": "semver",
              "lessThanOrEqual": "10.6.6"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:ibm:datapower_gateway_1060:10.6.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:datapower_gateway_1060:10.6.0.10:*:*:*:*:*:*:*"
          ],
          "vendor": "IBM",
          "product": "DataPower Gateway 10.6.0",
          "versions": [
            {
              "status": "affected",
              "version": "10.6.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "10.6.0.10"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:ibm:datapower_gateway_1100:11.0.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:datapower_gateway_1100:11.0.0.2:*:*:*:*:*:*:*"
          ],
          "vendor": "IBM",
          "product": "DataPower Gateway 11.0.0",
          "versions": [
            {
              "status": "affected",
              "version": "11.0.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "11.0.0.2"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:ibm:datapower_gateway_1050:10.5.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:datapower_gateway_1050:10.5.0.22:*:*:*:*:*:*:*"
          ],
          "vendor": "IBM",
          "product": "DataPower Gateway 10.5.0",
          "versions": [
            {
              "status": "affected",
              "version": "10.5.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "10.5.0.22"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-10-08T13:17:16.610",
  "references": [
    {
      "url": "https://www.ibm.com/support/pages/node/7289775",
      "source": "psirt@us.ibm.com"
    }
  ],
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@us.ibm.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM DataPower Gateway 10.5.0.0 through 10.5.0.22, 10.6.1 through 10.6.6, 10.6.0.0 through 10.6.0.10, and 11.0.0.0 through 11.0.0.2 could allow a remote attacker to execute arbitrary code due to an out-of-bounds write in the RFC2047 encoded-word parser."
    }
  ],
  "lastModified": "2026-10-08T18:17:28.317",
  "sourceIdentifier": "psirt@us.ibm.com"
}