CVE-2026-4744 identifies a critical out-of-bounds read vulnerability (CWE-125) in rizonesoft Notepad3 versions prior to 6.25.714.1, specifically within its scintilla/oniguruma/src modules. Rated 9.3 CRITICAL, this flaw requires local access and user interaction, such as opening a malicious file, but has low attack complexity. Successful exploitation could lead to high impacts on confidentiality, integrity, and availability, including potential data disclosure and application crashes. There is currently no evidence of active exploitation, nor are public exploit modules available. Organizations are advised to update Notepad3 to the latest version, restrict access, and exercise caution with untrusted files to mitigate this risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 0, < 6.25.714.1CPE match | cpe:2.3:a:rizonesoft:notepad3:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:N/R:U/V:D/RE:L/U:Amber
The average CVE in this peer group has 0.0 Twitter, 0.9 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 1.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.3 Security Researcher mentions.
Remediation records are not available for this CVE.