fkie_cve-2025-55315
Vulnerability from fkie_nvd
Published
2025-10-14 17:15
Modified
2025-10-28 21:15
Severity ?
9.9 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Summary
Inconsistent interpretation of http requests ('http request/response smuggling') in ASP.NET Core allows an authorized attacker to bypass a security feature over a network.
References
secure@microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55315Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://andrewlock.net/understanding-the-worst-dotnet-vulnerability-request-smuggling-and-cve-2025-55315/
134c704f-9b21-4f2e-91b3-4a467353bcc0https://gist.github.com/N3mes1s/d0897c13ca199e739ecc2b562f466040
Impacted products
Vendor Product Version
microsoft asp.net_core *
microsoft asp.net_core *
microsoft asp.net_core *
microsoft visual_studio_2022 *
microsoft visual_studio_2022 *
microsoft visual_studio_2022 *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3FFD93B1-E2BC-4183-AF00-E8076AE481EB",
              "versionEndExcluding": "2.3.6",
              "versionStartIncluding": "2.3.0",
              "vulnerable": true
            },
            {
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              "versionEndExcluding": "17.12.13",
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            },
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          "negate": false,
          "operator": "OR"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Inconsistent interpretation of http requests (\u0027http request/response smuggling\u0027) in ASP.NET Core allows an authorized attacker to bypass a security feature over a network."
    }
  ],
  "id": "CVE-2025-55315",
  "lastModified": "2025-10-28T21:15:37.933",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 9.9,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 6.0,
        "source": "secure@microsoft.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-10-14T17:15:44.960",
  "references": [
    {
      "source": "secure@microsoft.com",
      "tags": [
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      ],
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55315"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
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  "sourceIdentifier": "secure@microsoft.com",
  "vulnStatus": "Modified",
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        {
          "lang": "en",
          "value": "CWE-444"
        }
      ],
      "source": "secure@microsoft.com",
      "type": "Secondary"
    }
  ]
}


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