CVE-2025-56383

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.

Affected Software

Weaknesses

• n/a

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: total

References

• https://github.com/notepad-plus-plus/notepad-plus-plus
• https://github.com/zer0t0/CVE-2025-56383-Proof-of-Concept
• https://github.com/zer0t0/CVE-2025-56383-Proof-of-Concept/issues/1
• https://www.vicarius.io/vsociety/posts/cve-2025-56383-detect-notepad-vulnerability
• https://www.vicarius.io/vsociety/posts/cve-2025-56383-mitigate-notepad-vulnerability

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