CVE-2026-4744

Notepad3 Bundled Oniguruma compile_string_node() Heap Buffer Overflow via Crafted Regex Pattern Allows Arbitrary Code Execution

State: Published
Severity: 9.3 Critical
Published: Mar 24, 2026
Updated: Mar 24, 2026
Reserved: Mar 24, 2026

Read the record on cve.org

Description

Out-of-bounds Read vulnerability in rizonesoft Notepad3 (‎scintilla/oniguruma/src modules). This vulnerability is associated with program files regcomp.C‎.

This issue affects Notepad3: before 6.25.714.1.

Scores

CVSS	Score	Vector	Source
4.0	9.3 Critical	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/S:N/AU:N/R:U/V:D/RE:L/U:Amber	GovTech CSG

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
Notepad3rizonesoft	before 6.25.714.1Affected

References

https://github.com/rizonesoft/Notepad3/pull/5392patch

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.