CVE-2025-56383
Notepad++ v8.8.3 has a DLL hijacking vulnerability, which can replace the original DLL file to...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2025-56383- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-427
- Updated
- 2026-11-02
EUVDEUVD-2025-31376
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.
- Record
EUVD-2025-31376- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-fq6p-2qgq-54m8
Notepad++ v8.8.3 has a DLL hijacking vulnerability, which can replace the original DLL file to...
Notepad++ v8.8.3 has a DLL hijacking vulnerability, which can replace the original DLL file to execute malicious code.
- Record
GHSA-fq6p-2qgq-54m8- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-77, CWE-427
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-56383- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-427
- Updated
- 2026-11-06
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | zer0t0/CVE-2025-56383-Proof-of-Concept | 2025-09-26 |
| PoC in GitHub | NewComrade12211/CVE-2025-56383 | 2025-11-05 |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploits, facts | NVD | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-56383 is a high vulnerability (CVSS 8.4), published September 26, 2025. Its validity is disputed. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 32nd percentile.
References
github.com/notepad-plus-plus/notepad-plus-plus
vicarius.io/vsociety/posts/cve-2025-56383-detect-notepad-vulnerability
nvd.nist.gov/vuln/detail/CVE-2025-56383