Vulnerability-Lookup

FKIE_CVE-2026-18246

Vulnerability from fkie_nvd - Published: 2026-08-12 17:17 - Updated: 2026-08-17 14:50

Severity

3.0 (Low) - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Summary

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions due to an interpretation conflict in the multipart parser.

References

	URL	Tags
	psirt@us.ibm.com	https://www.ibm.com/support/pages/node/7283292	Vendor Advisory

Impacted products

Vendor	Product	Version
ibm	i	7.3
ibm	i	7.4
ibm	i	7.5
ibm	i	7.6

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:*"
          ],
          "product": "i",
          "vendor": "IBM",
          "versions": [
            {
              "status": "affected",
              "version": "7.6"
            },
            {
              "status": "affected",
              "version": "7.5"
            },
            {
              "status": "affected",
              "version": "7.4"
            },
            {
              "status": "affected",
              "version": "7.3"
            }
          ]
        }
      ],
      "source": "psirt@us.ibm.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:ibm:i:7.3:*:*:*:*:*:*:*",
              "matchCriteriaId": "9A49E8C5-7967-42AE-A787-C533D24A63D7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:ibm:i:7.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "92D03306-B6C9-403E-99A2-CE9D8DC3B482",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:ibm:i:7.5:*:*:*:*:*:*:*",
              "matchCriteriaId": "F7CCB5BF-08EF-472F-A663-5DE270234F10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:ibm:i:7.6:*:*:*:*:*:*:*",
              "matchCriteriaId": "AFFF96C2-7E0F-4DF9-AF51-3EE357D51095",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions due to an interpretation conflict in the multipart parser."
    }
  ],
  "id": "CVE-2026-18246",
  "lastModified": "2026-08-17T14:50:52.857",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 3.0,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.3,
        "impactScore": 1.4,
        "source": "psirt@us.ibm.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-18246",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-13T16:26:36.329048Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-12T17:17:25.527",
  "references": [
    {
      "source": "psirt@us.ibm.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.ibm.com/support/pages/node/7283292"
    }
  ],
  "sourceIdentifier": "psirt@us.ibm.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-436"
        }
      ],
      "source": "psirt@us.ibm.com",
      "type": "Secondary"
    }
  ]
}

CVE-2026-18246 (GCVE-0-2026-18246)

Vulnerability from cvelistv5 – Published: 2026-08-12 16:55 – Updated: 2026-08-13 16:26

Title

IBM i is Affected By security restrictions bypass in Navigator for i

Summary

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions due to an interpretation conflict in the multipart parser.

Severity

3 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-13 16:26 UTC

CWE

CWE-436 - Interpretation Conflict

Assigner

ibm mitre root

References

1 reference

URL	Tags
https://www.ibm.com/support/pages/node/7283292	vendor-advisorypatch

Impacted products

1 product

Vendor	Product	Version
IBM	i	Affected: 7.6 Affected: 7.5 Affected: 7.4 Affected: 7.3 cpe:2.3:a:ibm:i:7.6:::::::* cpe:2.3:a:ibm:i:7.6.0:::::::* cpe:2.3:a:ibm:i:7.5:::::::* cpe:2.3:a:ibm:i:7.5.0:::::::* cpe:2.3:a:ibm:i:7.4:::::::* cpe:2.3:a:ibm:i:7.4.0:::::::* cpe:2.3:a:ibm:i:7.3:::::::* cpe:2.3:a:ibm:i:7.3.0:::::::*

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-18246",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-13T16:26:36.329048Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-13T16:26:44.959Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:*"
          ],
          "product": "i",
          "vendor": "IBM",
          "versions": [
            {
              "status": "affected",
              "version": "7.6"
            },
            {
              "status": "affected",
              "version": "7.5"
            },
            {
              "status": "affected",
              "version": "7.4"
            },
            {
              "status": "affected",
              "version": "7.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eIBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions due to an interpretation conflict in the multipart parser.\u003c/p\u003e"
            }
          ],
          "value": "IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to bypass security restrictions due to an interpretation conflict in the multipart parser."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-436",
              "description": "CWE-436 Interpretation Conflict",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-12T16:55:44.118Z",
        "orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
        "shortName": "ibm"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "patch"
          ],
          "url": "https://www.ibm.com/support/pages/node/7283292"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003e\u003cstrong\u003eIBM strongly recommends addressing the vulnerability now.\u003c/strong\u003e\u003c/p\u003e\u003cdiv\u003e\u003ctable\u003e\u003ccolgroup\u003e\u003ccol/\u003e\u003ccol/\u003e\u003ccol/\u003e\u003c/colgroup\u003e\u003cthead\u003e\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eIBM i Release\u003c/strong\u003e\u003c/td\u003e\u003ctd\u003e\u003cstrong\u003e5770-SS1 Option 3\u003cbr/\u003ePTF Number(s)\u003c/strong\u003e\u003c/td\u003e\u003ctd\u003e\u003cstrong\u003ePTF Download Link(s)\u003c/strong\u003e\u003c/td\u003e\u003c/tr\u003e\u003c/thead\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003e7.6\u003c/td\u003e\u003ctd\u003eSJ10887\u003c/td\u003e\u003ctd\u003e\u003ca href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10887\" rel=\"noopener noreferrer nofollow\"\u003ehttps://www.ibm.com/mysupport/s/fix-information?legacy=SJ10887\u003c/a\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e7.5\u003c/td\u003e\u003ctd\u003eSJ10888\u003c/td\u003e\u003ctd\u003e\u003ca href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10888\" rel=\"noopener noreferrer nofollow\"\u003ehttps://www.ibm.com/mysupport/s/fix-information?legacy=SJ10888\u003c/a\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e7.4\u003c/td\u003e\u003ctd\u003eSJ10890\u003c/td\u003e\u003ctd\u003e\u003ca href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10890\" rel=\"noopener noreferrer nofollow\"\u003ehttps://www.ibm.com/mysupport/s/fix-information?legacy=SJ10890\u003c/a\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e7.3\u003c/td\u003e\u003ctd\u003eSJ10891\u003c/td\u003e\u003ctd\u003e\u003ca href=\"https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10891\" rel=\"noopener noreferrer nofollow\"\u003ehttps://www.ibm.com/mysupport/s/fix-information?legacy=SJ10891\u003c/a\u003e\u003c/td\u003e\u003c/tr\u003e\u003c/tbody\u003e\u003c/table\u003e\u003c/div\u003e\u003cp\u003eIBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.\u003c/p\u003e"
            }
          ],
          "value": "IBM strongly recommends addressing the vulnerability now.\n\nIBM i Release5770-SS1 Option 3\nPTF Number(s)PTF Download Link(s)7.6SJ10887 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10887 7.5SJ10888 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10888 7.4SJ10890 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10890 7.3SJ10891 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10891 \n\n\n\nIBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products."
        }
      ],
      "title": "IBM i is Affected By security restrictions bypass in Navigator for i"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
    "assignerShortName": "ibm",
    "cveId": "CVE-2026-18246",
    "datePublished": "2026-08-12T16:55:44.118Z",
    "dateReserved": "2026-07-29T14:53:53.973Z",
    "dateUpdated": "2026-08-13T16:26:44.959Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

FKIE_CVE-2026-18246

CVE-2026-18246 (GCVE-0-2026-18246)

Tags

Sightings

Nomenclature