PT-2026-26976 · Flos+1 · Notepad2+1

Haehanse + 1 · Published 2026-03-22 · Updated 2026-04-30 · CVE-2026-4545

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Flos Freeware Notepad2 version 4.2.25

Description A security flaw exists in Flos Freeware Notepad2 that involves an uncontrolled search path within the PROPSYS.dll library. Exploitation requires local access and is considered difficult. The issue involves manipulation of an unknown function within the library. The vendor was contacted regarding this disclosure but did not respond.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

LPE

Uncontrolled Search Path Element

Untrusted Search Path

Weakness Enumeration

CWE-427

CWE-426

Related Identifiers

CVE-2026-4545

Affected Products

Notepad2

Propsys.Dll

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-4545 · Security Note
• https://twitter.com/VulmonFeeds/status/2035699382721347624 · Twitter Post
• https://twitter.com/CVEnew/status/2035992540474667354 · Twitter Post
• https://vuldb.com/?ctiid.352372 · Note
• https://t.me/cveNotify/161549 · Telegram Post
• https://vuldb.com/?id.352372 · Note
• https://drive.google.com/file/d/1o3A3x47B2gi645H02-28qgoIgGN-g6rK/view · Note
• https://vuldb.com/?submit.774752 · Note
• https://twitter.com/cyberbivash/status/2035701237820121112 · Twitter Post