FKIE_CVE-2026-39824

Vulnerability from fkie_nvd - Published: 2026-05-22 20:16 - Updated: 2026-07-23 16:10
Severity
3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Summary
NewNTUnicodeString does not check for string length overflow. When provided with a string that overflows the maximum size of a NTUnicodeString (a 16-bit number of bytes), it returns a truncated string rather than an error.
References
security@golang.orghttps://go.dev/cl/770080
security@golang.orghttps://go.dev/issue/78916
security@golang.orghttps://groups.google.com/g/golang-announce/c/6MMI8Lj-Atg
security@golang.orghttps://pkg.go.dev/vuln/GO-2026-5024
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "golang.org/x/sys/windows",
          "platforms": [
            "windows"
          ],
          "product": "golang.org/x/sys/windows",
          "programRoutines": [
            {
              "name": "NewNTUnicodeString"
            }
          ],
          "vendor": "golang.org/x/sys",
          "versions": [
            {
              "lessThan": "0.44.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@golang.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "NewNTUnicodeString does not check for string length overflow. When provided with a string that overflows the maximum size of a NTUnicodeString (a 16-bit number of bytes), it returns a truncated string rather than an error."
    },
    {
      "lang": "es",
      "value": "NewNTUnicodeString no comprueba el desbordamiento de longitud de cadena. Cuando se le proporciona una cadena que desborda el tama\u00f1o m\u00e1ximo de una NTUnicodeString (un n\u00famero de bytes de 16 bits), devuelve una cadena truncada en lugar de un error."
    }
  ],
  "id": "CVE-2026-39824",
  "lastModified": "2026-07-23T16:10:00.137",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 3.3,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 1.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-39824",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-27T13:31:22.142852Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-22T20:16:33.057",
  "references": [
    {
      "source": "security@golang.org",
      "url": "https://go.dev/cl/770080"
    },
    {
      "source": "security@golang.org",
      "url": "https://go.dev/issue/78916"
    },
    {
      "source": "security@golang.org",
      "url": "https://groups.google.com/g/golang-announce/c/6MMI8Lj-Atg"
    },
    {
      "source": "security@golang.org",
      "url": "https://pkg.go.dev/vuln/GO-2026-5024"
    }
  ],
  "sourceIdentifier": "security@golang.org",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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