FKIE_CVE-2025-56383

Vulnerability from fkie_nvd - Published: 2025-09-26 18:15 - Updated: 2025-11-19 15:15
Severity ?
8.4 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Notepad++ v8.8.3 has a DLL hijacking vulnerability, which can replace the original DLL file to execute malicious code. NOTE: this is disputed by multiple parties because the behavior only occurs when a user installs the product into a directory tree that allows write access by arbitrary unprivileged users.
References
cve@mitre.orghttps://github.com/notepad-plus-plus/notepad-plus-plus
cve@mitre.orghttps://github.com/zer0t0/CVE-2025-56383-Proof-of-Concept
cve@mitre.orghttps://github.com/zer0t0/CVE-2025-56383-Proof-of-Concept/issues/1
cve@mitre.orghttps://www.vicarius.io/vsociety/posts/cve-2025-56383-detect-notepad-vulnerability
cve@mitre.orghttps://www.vicarius.io/vsociety/posts/cve-2025-56383-mitigate-notepad-vulnerability
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [
    {
      "sourceIdentifier": "cve@mitre.org",
      "tags": [
        "disputed"
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Notepad++ v8.8.3 has a DLL hijacking vulnerability, which can replace the original DLL file to execute malicious code. NOTE: this is disputed by multiple parties because the behavior only occurs when a user installs the product into a directory tree that allows write access by arbitrary unprivileged users."
    }
  ],
  "id": "CVE-2025-56383",
  "lastModified": "2025-11-19T15:15:48.437",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-09-26T18:15:36.490",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/notepad-plus-plus/notepad-plus-plus"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/zer0t0/CVE-2025-56383-Proof-of-Concept"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/zer0t0/CVE-2025-56383-Proof-of-Concept/issues/1"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://www.vicarius.io/vsociety/posts/cve-2025-56383-detect-notepad-vulnerability"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://www.vicarius.io/vsociety/posts/cve-2025-56383-mitigate-notepad-vulnerability"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-427"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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Sightings

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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.