NVD disclosure day

Published threat advisories for February 3, 2026

CVE advisoryKnown Exploit

CVE-2025-15556

Notepad++ Updater Integrity Vulnerability Allows Code Execution.

Halo Surface Signal: 1 out of 5 — much less likely to be public-facing.

The Notepad++ WinGUp updater has an integrity vulnerability where downloaded updates are not verified. An attacker can redirect update traffic to deliver a malicious installer, leading to arbitrary code execution on user systems. Organizations should apply vendor mitigations due to the business risk.

• CISA KEV