CVE-2026-10859 (GCVE-0-2026-10859)

Vulnerability from cvelistv5 – Published: 2026-11-04 20:26 – Updated: 2026-11-04 20:26
VLAI
Title
IBM MQ XMS .NET client is affected by an arbitrary code execution vulnerability
Summary
IBM MQ 9.2.0.0 through 9.2.0.44 LTS, 9.3.0.0 through 9.3.0.42 LTS, 9.4.0.0 through 9.4.0.26 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 through 10.0.0.5 LTS and CD could allow an authenticated attacker to execute arbitrary code on consumer applications due to insecure deserialization of ObjectMessage payloads.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
ibm CNA under the mitre root
CNA scorecard B 88/100 over 1335 records in the last 180 days details
References
URL Tags
https://www.ibm.com/support/pages/node/7294664 vendor-advisorypatch
Impacted products
Vendor Product Version CPE status
IBM MQ Affected: 9.2.0.0 , ≤ 9.2.0.44 (semver)
Affected: 9.3.0.0 , ≤ 9.3.0.42 (semver)
Affected: 9.4.0.0 , ≤ 9.4.0.26 (semver)
Affected: 9.4.0.0 , ≤ 9.4.5.1 (semver)
Affected: 10.0.0.0 , ≤ 10.0.0.5 (semver)
    cpe:2.3:a:ibm:mq:9.2.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:mq:9.3.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:mq:9.4.0.0:*:*:*:*:*:*:*
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:mq:9.2.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:mq:9.3.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:mq:9.4.0.0:*:*:*:*:*:*:*"
          ],
          "product": "MQ",
          "vendor": "IBM",
          "versions": [
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              "status": "affected",
              "version": "9.2.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "9.3.0.42",
              "status": "affected",
              "version": "9.3.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "9.4.0.26",
              "status": "affected",
              "version": "9.4.0.0",
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            {
              "lessThanOrEqual": "9.4.5.1",
              "status": "affected",
              "version": "9.4.0.0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "10.0.0.5",
              "status": "affected",
              "version": "10.0.0.0",
              "versionType": "semver"
            }
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        }
      ],
      "descriptions": [
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          "lang": "en",
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              "value": "\u003cp\u003eIBM MQ 9.2.0.0 through 9.2.0.44 LTS, 9.3.0.0 through 9.3.0.42 LTS, 9.4.0.0 through 9.4.0.26 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 through 10.0.0.5 LTS and CD could allow an authenticated attacker to execute arbitrary code on consumer applications due to insecure deserialization of ObjectMessage payloads.\u003c/p\u003e"
            }
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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      "providerMetadata": {
        "dateUpdated": "2026-11-04T20:26:15.673Z",
        "orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
        "shortName": "ibm"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "patch"
          ],
          "url": "https://www.ibm.com/support/pages/node/7294664"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eThis issue was addressed under Known Issue DT472703.\u003c/p\u003e\u003cp\u003eIBM MQ version 9.2 LTS\u003c/p\u003e\u003cp\u003e\u003ca href=\"https://www.ibm.com/support/pages/downloading-ibm-mq-92-lts\" rel=\"noopener noreferrer nofollow\"\u003eApply cumulative security update 9.2.0.46\u003c/a\u003e\u003c/p\u003e\u003cp\u003eIBM MQ version 9.3 LTS\u003c/p\u003e\u003cp\u003e\u003ca href=\"https://www.ibm.com/support/pages/downloading-ibm-mq-93-lts\" rel=\"noopener noreferrer nofollow\"\u003eApply cumulative security update 9.3.0.43\u003c/a\u003e\u003c/p\u003e\u003cp\u003eIBM MQ version 9.4 LTS\u003c/p\u003e\u003cp\u003e\u003ca href=\"https://www.ibm.com/support/pages/downloading-ibm-mq-94\" rel=\"noopener noreferrer nofollow\"\u003eApply fix pack 9.4.0.30\u003c/a\u003e\u003c/p\u003e\u003cp\u003eIBM MQ version 10.0.LTS\u003c/p\u003e\u003cp\u003e\u003ca href=\"https://www.ibm.com/support/pages/downloading-ibm-mq-100\" rel=\"noopener noreferrer nofollow\"\u003eUpgrade to IBM MQ version 10.0.0.6\u003c/a\u003e\u003c/p\u003e\u003cp\u003eIBM MQ version 9.4 CD and 10.0 CD\u003c/p\u003e\u003cp\u003e\u003ca href=\"https://www.ibm.com/support/pages/downloading-ibm-mq-100\" rel=\"noopener noreferrer nofollow\"\u003eUpgrade to IBM MQ version 10.0.1.0\u003c/a\u003e\u003c/p\u003e"
            }
          ],
          "value": "This issue was addressed under Known Issue DT472703.\n\n\n\nIBM MQ version 9.2 LTS\n\n\n\n Apply cumulative security update 9.2.0.46 https://www.ibm.com/support/pages/downloading-ibm-mq-92-lts \n\n\n\nIBM MQ version 9.3 LTS\n\n\n\n Apply cumulative security update 9.3.0.43 https://www.ibm.com/support/pages/downloading-ibm-mq-93-lts \n\n\n\nIBM MQ version 9.4 LTS\n\n\n\n Apply fix pack 9.4.0.30 https://www.ibm.com/support/pages/downloading-ibm-mq-94 \n\n\n\nIBM MQ version 10.0.LTS\n\n\n\n Upgrade to IBM MQ version 10.0.0.6 https://www.ibm.com/support/pages/downloading-ibm-mq-100 \n\n\n\nIBM MQ version 9.4 CD and 10.0 CD\n\n\n\n Upgrade to IBM MQ version 10.0.1.0 https://www.ibm.com/support/pages/downloading-ibm-mq-100"
        }
      ],
      "title": "IBM MQ XMS .NET client is affected by an arbitrary code execution vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
    "assignerShortName": "ibm",
    "cveId": "CVE-2026-10859",
    "datePublished": "2026-11-04T20:26:15.673Z",
    "dateReserved": "2026-06-04T13:24:14.044Z",
    "dateUpdated": "2026-11-04T20:26:15.673Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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        "affected": [
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                  "cpe:2.3:a:ibm:mq:9.3.0.0:*:*:*:*:*:*:*",
                  "cpe:2.3:a:ibm:mq:9.4.0.0:*:*:*:*:*:*:*"
                ],
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                "vendor": "IBM",
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                    "version": "9.2.0.0",
                    "versionType": "semver"
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                  {
                    "lessThanOrEqual": "9.3.0.42",
                    "status": "affected",
                    "version": "9.3.0.0",
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                    "lessThanOrEqual": "9.4.0.26",
                    "status": "affected",
                    "version": "9.4.0.0",
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                  {
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                    "version": "10.0.0.0",
                    "versionType": "semver"
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        "descriptions": [
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            "value": "IBM MQ 9.2.0.0 through 9.2.0.44 LTS, 9.3.0.0 through 9.3.0.42 LTS, 9.4.0.0 through 9.4.0.26 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 through 10.0.0.5 LTS and CD could allow an authenticated attacker to execute arbitrary code on consumer applications due to insecure deserialization of ObjectMessage payloads."
          }
        ],
        "id": "CVE-2026-10859",
        "lastModified": "2026-11-04T21:17:48.217",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
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                "version": "3.1"
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              "impactScore": 5.9,
              "source": "psirt@us.ibm.com",
              "type": "Primary"
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        "published": "2026-11-04T21:17:48.103",
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            "source": "psirt@us.ibm.com",
            "url": "https://www.ibm.com/support/pages/node/7294664"
          }
        ],
        "sourceIdentifier": "psirt@us.ibm.com",
        "vulnStatus": "Undergoing Analysis"
      }
    }
  }
}



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