🛡️ CVE-2026-4545 — notepad2

🟠 CVSS 7.0 — High ✅ No Known Exploit CWE-426 NVD
7.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A security flaw has been discovered in Flos Freeware Notepad2 4.2.25. This affects an unknown function in the library PROPSYS.dll. Performing a manipulation results in uncontrolled search path. The attack is only possible with local access. The attack is considered to have high complexity. The exploitability is reported as difficult. The vendor was contacted early about this disclosure but did not respond in any way.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-4545 is classified as CWE-426: Untrusted Search Path. The product resolves a library or executable using a search path an attacker can influence.

Affected software

CVE-2026-4545 is recorded against 1 package.

  • notepad2

Timeline and source

Published on 22 March 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

drive.google.com
vuldb.com
vuldb.com
vuldb.com

Details

Severity HIGH
CVSS Score 7.0
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-426
Public Exploit ✅ No
Source NVD
Published 2026-03-22
Updated 2026-08-11
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
notepad2 — —

References

Permissions Required https://vuldb.com/?ctiid.352372
Third Party Advisory, VDB Entry https://vuldb.com/?id.352372
Third Party Advisory, VDB Entry https://vuldb.com/?submit.774752

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