Flos Freeware Notepad2 PROPSYS.dll uncontrolled search path
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-426.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Flos Freeware | Notepad2 | 4.2.25 | — | No fix listed | CNA |
- Notepad2 VendorFlos Freeware Affected 4.2.25 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:flos-freeware:notepad2:4.2.25:*:*:*:*:*:*:* | 4.2.25 | Vulnerable | Flos Freeware |
- cpe:2.3:a:flos-freeware:notepad2:4.2.25:*:*:*:*:*:*:* Versions 4.2.25 Vulnerable ·Flos Freeware
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-4545
- 2026-10-03 Alias added: GHSA-mjfx-9m7c-mcxv
More Flos Freeware Notepad2 vulnerabilities
- TI-2026-03951 Flos Freeware Notepad2 TextShaping.dll uncontrolled search path CVSS 4.0HIGH 7.3
Sources
- CVE-2026-4545 · CVE Program
- CVE-2026-4545 · NVD
- FIRST EPSS
- GHSA-mjfx-9m7c-mcxv · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences