Vulnerability-Lookup

GHSA-4VPJ-HR3R-4GPG

Vulnerability from github – Published: 2026-05-26 13:30 – Updated: 2026-05-27 15:32

Details

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.

Severity

3.3 (Low)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-39824"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-22T20:16:33Z",
    "severity": "LOW"
  },
  "details": "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.",
  "id": "GHSA-4vpj-hr3r-4gpg",
  "modified": "2026-05-27T15:32:59Z",
  "published": "2026-05-26T13:30:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39824"
    },
    {
      "type": "WEB",
      "url": "https://go.dev/cl/770080"
    },
    {
      "type": "WEB",
      "url": "https://go.dev/issue/78916"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/golang-announce/c/6MMI8Lj-Atg"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2026-5024"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-39824 (GCVE-0-2026-39824)

Vulnerability from cvelistv5 – Published: 2026-05-22 19:39 – Updated: 2026-05-27 13:31

Title

Invoking integer overflow in NewNTUnicodeString in golang.org/x/sys/windows

Summary

Severity

3.3 (Low)


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

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

References

4 references

URL	Tags
https://go.dev/issue/78916
https://go.dev/cl/770080
https://groups.google.com/g/golang-announce/c/6MM…
https://pkg.go.dev/vuln/GO-2026-5024

Impacted products

1 product

Vendor	Product	Version
golang.org/x/sys	golang.org/x/sys/windows	Affected: 0 , < 0.44.0 (semver)

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-39824",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-27T13:31:22.142852Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-190",
                "description": "CWE-190 Integer Overflow or Wraparound",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-27T13:31:26.148Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-190: Integer Overflow or Wraparound",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-22T19:39:47.629Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/issue/78916"
        },
        {
          "url": "https://go.dev/cl/770080"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/6MMI8Lj-Atg"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-5024"
        }
      ],
      "title": "Invoking  integer overflow in NewNTUnicodeString in golang.org/x/sys/windows"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2026-39824",
    "datePublished": "2026-05-22T19:39:47.629Z",
    "dateReserved": "2026-04-07T18:13:03.527Z",
    "dateUpdated": "2026-05-27T13:31:26.148Z",
    "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.

Action not permitted

GHSA-4VPJ-HR3R-4GPG

CVE-2026-39824 (GCVE-0-2026-39824)

Tags

Sightings

Nomenclature