Out-of-bounds Read in Rizonesoft Notepad3

CVE-2026-4744

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.

Vulnerability class: Buffer Overflow

EPSS: 0.000 (6.2th percentile) — read the EPSS interpretation.

Affected products

Rizonesoft Notepad3 — versions 0

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

github.com/rizonesoft/Notepad3/pull/5392 (patch)