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CVE-2026-105442

Status: Awaiting AnalysisHigh (7.5)—
Severity7.5High · CVSS 3.1
Exploitation probability0.40 %higher than 32% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

IBM WebSphere Application Server 8.5, and 9.0 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 Liberty could allow a remote attacker to cause a denial of service caused by an insecure deserialization in the messaging service.

CVSS

Base score
7.5
Version
3.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.40 %
Percentile among all scored CVEs
32
Score date
10/20/2026

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 AV:N/PR:N/UI:N y descripción: atacante remoto sin privilegios provoca denegación de servicio por deserialización insegura en el servicio de mensajería. No hay ejecución de comandos, por lo que se descarta T1059.

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

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Affected technologies (2)

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

IBM — Websphere Application ServerAIIBM — Websphere Application Server LibertyAI

CWEs

References

Show 1 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-105442",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-105442",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-14T16:55:21.531162Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@us.ibm.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@us.ibm.com",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:*"
          ],
          "vendor": "IBM",
          "product": "WebSphere Application Server",
          "versions": [
            {
              "status": "affected",
              "version": "8.5"
            },
            {
              "status": "affected",
              "version": "9.0"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.10:*:*:*:*:*:*:*"
          ],
          "vendor": "IBM",
          "product": "WebSphere Application Server - Liberty",
          "versions": [
            {
              "status": "affected",
              "version": "17.0.0.3",
              "versionType": "semver",
              "lessThanOrEqual": "26.0.0.10"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-10-13T21:17:26.913",
  "references": [
    {
      "url": "https://www.ibm.com/support/pages/node/7292221",
      "source": "psirt@us.ibm.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@us.ibm.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM WebSphere Application Server 8.5, and 9.0 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 Liberty could allow a remote attacker to cause a denial of service caused by an insecure deserialization in the messaging service."
    }
  ],
  "lastModified": "2026-10-14T17:18:15.073",
  "sourceIdentifier": "psirt@us.ibm.com"
}