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CVE-2026-7771

Status: AnalyzedMedium (5.5)—

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a trap when compiling a specially crafted statements containing subqueries could lead to a denial of service.

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 (1)

IBM — DB2

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2026-7771",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-7771",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-07-21T02:02:58.525114Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@us.ibm.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@us.ibm.com",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:db2:11.5.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:db2:11.5.9:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:db2:12.1.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:db2:12.1.4:*:*:*:*:*:*:*"
          ],
          "vendor": "IBM",
          "product": "Db2",
          "versions": [
            {
              "status": "affected",
              "version": "11.5.0",
              "versionType": "semver",
              "lessThanOrEqual": "11.5.9"
            },
            {
              "status": "affected",
              "version": "12.1.0",
              "versionType": "semver",
              "lessThanOrEqual": "12.1.4"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-07-17T20:17:30.247",
  "references": [
    {
      "url": "https://www.ibm.com/support/pages/node/7279480",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@us.ibm.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@us.ibm.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a trap when compiling a specially crafted statements containing subqueries could lead to a denial of service."
    }
  ],
  "lastModified": "2026-07-24T15:59:54.313",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ibm:db2:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "ECBD1085-509F-49E6-9DB0-1015F7B63955",
              "versionEndIncluding": "11.5.9",
              "versionStartIncluding": "11.5.0"
            },
            {
              "criteria": "cpe:2.3:a:ibm:db2:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0637029F-987F-474F-8664-C874A4FCE191",
              "versionEndExcluding": "12.1.5",
              "versionStartIncluding": "12.1.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@us.ibm.com"
}