FKIE_CVE-2026-18531

Vulnerability from fkie_nvd - Published: 2026-08-05 16:16 - Updated: 2026-08-10 16:10
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
IBM Maximo Application Suite 9.2, 9.1, and 9.0 could allow a remote attacker to tamper with session data due to the use of a weak HMAC session signing secret.
References
psirt@us.ibm.comhttps://www.ibm.com/support/pages/node/7282362Vendor Advisory
Impacted products
Vendor Product Version
ibm maximo_application_suite *
ibm maximo_application_suite *
ibm maximo_application_suite 9.2
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:maximo_application_suite:9.2:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:maximo_application_suite:9.2.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:maximo_application_suite:9.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:maximo_application_suite:9.1.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:maximo_application_suite:9.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:maximo_application_suite:9.0.0:*:*:*:*:*:*:*"
          ],
          "product": "Maximo Application Suite",
          "vendor": "IBM",
          "versions": [
            {
              "status": "affected",
              "version": "9.2"
            },
            {
              "status": "affected",
              "version": "9.1"
            },
            {
              "status": "affected",
              "version": "9.0"
            }
          ]
        }
      ],
      "source": "psirt@us.ibm.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ibm:maximo_application_suite:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "663EE5F0-7A05-4F55-9481-4A78D3D27D1B",
              "versionEndExcluding": "9.0.28",
              "versionStartIncluding": "9.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ibm:maximo_application_suite:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AF02DDF1-77F3-47AC-B40C-21E2AF7BF6C1",
              "versionEndExcluding": "9.1.20",
              "versionStartIncluding": "9.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ibm:maximo_application_suite:9.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "7B4E3EAB-88C1-4E7C-A169-8EBBE2096B3D",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM Maximo Application Suite 9.2, 9.1, and 9.0 could allow a remote attacker to tamper with session data due to the use of a weak HMAC session signing secret."
    }
  ],
  "id": "CVE-2026-18531",
  "lastModified": "2026-08-10T16:10:16.237",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-18531",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-06T14:26:06.849869Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-05T16:16:54.290",
  "references": [
    {
      "source": "psirt@us.ibm.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.ibm.com/support/pages/node/7282362"
    }
  ],
  "sourceIdentifier": "psirt@us.ibm.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-330"
        }
      ],
      "source": "psirt@us.ibm.com",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.