What is CVE-2025-56383?

CVE-2025-56383 is a high-severity vulnerability in N/a, classified under Uncontrolled Search Path Element. CVSS score: 8.4/10. Published 2025-09-26.

How severe is CVE-2025-56383?

High severity. CVSS v3 base score is 8.4 out of 10.

Is CVE-2025-56383 known to be exploited?

5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in N/a

CVE-2025-56383

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.

Published 2025-09-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.6th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-56383?: CVE-2025-56383 is a high-severity vulnerability in N/a, classified under Uncontrolled Search Path Element. CVSS score: 8.4/10. Published 2025-09-26.
How severe is CVE-2025-56383?: High severity. CVSS v3 base score is 8.4 out of 10.
Is CVE-2025-56383 known to be exploited?: 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.