CVE-2026-2538: Flos Freeware Notepad2 Msimg32.dll uncontrolled search path

Severity: high (CVSS 7.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-16 · updated 2026-06-17
Weakness: CWE-426

Description

A security flaw has been discovered in Flos Freeware Notepad2 4.2.22/4.2.23/4.2.24/4.2.25. Affected is an unknown function in the library Msimg32.dll. Performing a manipulation results in uncontrolled search path. Attacking locally is a requirement. The attack's complexity is rated as high. The exploitability is told to be difficult. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

Flos Freeware Notepad2: 4.2.22, 4.2.23, 4.2.24, 4.2.25

References

https://github.com/Cyber-Wo0dy/report/blob/main/notepad2/4.2.25/notepad2_dll_hijacking.md
https://vuldb.com/?ctiid.346126
https://vuldb.com/?id.346126
https://vuldb.com/?submit.749345

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