FKIE_CVE-2026-40417

Vulnerability from fkie_nvd - Published: 2026-05-12 18:17 - Updated: 2026-06-03 01:19
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Weak authentication in Dynamics Business Central allows an authorized attacker to elevate privileges locally.
References
secure@microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40417Vendor Advisory
Impacted products
Vendor Product Version
microsoft dynamics_365_business_central 2024
microsoft dynamics_365_business_central 2025
microsoft dynamics_365_business_central 2025
microsoft dynamics_365_business_central 2026
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:dynamics_365_business_central:2024:release_wave_2:*:*:*:*:*:*",
              "matchCriteriaId": "53A74676-442E-49AC-8BCD-DC59757D5ED3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:microsoft:dynamics_365_business_central:2025:release_wave_1:*:*:*:*:*:*",
              "matchCriteriaId": "EEF0AF6B-F7CD-4140-8A72-B406983E5867",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:microsoft:dynamics_365_business_central:2025:release_wave_2:*:*:*:*:*:*",
              "matchCriteriaId": "92D9BF50-06D3-4E4E-8DE8-EEF8479BB88D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:microsoft:dynamics_365_business_central:2026:release_wave_1:*:*:*:*:*:*",
              "matchCriteriaId": "697BB01D-8F64-4699-BB16-DC84A5D39979",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Weak authentication in Dynamics Business Central allows an authorized attacker to elevate privileges locally."
    }
  ],
  "id": "CVE-2026-40417",
  "lastModified": "2026-06-03T01:19:19.580",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "secure@microsoft.com",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-05-12T18:17:19.817",
  "references": [
    {
      "source": "secure@microsoft.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40417"
    }
  ],
  "sourceIdentifier": "secure@microsoft.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1390"
        }
      ],
      "source": "secure@microsoft.com",
      "type": "Primary"
    }
  ]
}


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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

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.