CVE-2026-4545: Flos Freeware Notepad2 PROPSYS.dll uncontrolled search path

Severity: high (CVSS 7.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-22 · updated 2026-06-17
Weakness: CWE-426

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.

Affected products

Flos Freeware Notepad2: 4.2.25

References

https://drive.google.com/file/d/1o3A3x47B2gi645H02-28qgoIgGN-g6rK/view
https://vuldb.com/?ctiid.352372
https://vuldb.com/?id.352372
https://vuldb.com/?submit.774752

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