CVE-2025-49144
In versions 8.8.1 and prior, a privilege escalation vulnerability exists in the Notepad++ v8.8.1 installer that allows unprivileged users to gain SYSTEM-level privileges through insecure executable search paths.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.61%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Notepad++ is a free and open-source source code editor. In versions 8.8.1 and prior, a privilege escalation vulnerability exists in the Notepad++ v8.8.1 installer that allows unprivileged users to gain SYSTEM-level privileges through insecure executable search paths. An attacker could use social engineering or clickjacking to trick users into downloading both the legitimate installer and a malicious executable to the same directory (typically Downloads folder - which is known as Vulnerable directory). Upon running the installer, the attack executes automatically with SYSTEM privileges. This issue has been fixed and will be released in version 8.8.2.
- CVSS 3.1
- 7.3 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.61% probability · 48th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-272, CWE-276, CWE-427
- Source
- security-advisories@github.com
References
- https://drive.google.com/drive/folders/11yeUSWgqHvt4Bz5jO3ilRRfcpQZ6Gvpn
- https://github.com/notepad-plus-plus/notepad-plus-plus/commit/f2346ea00d5b4d907ed39d8726b38d77c8198f30
- https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-9vx8-v79m-6m24
- https://www.vicarius.io/vsociety/posts/cve-2025-49144-detect-notepad-vulnerability
- https://www.vicarius.io/vsociety/posts/cve-2025-49144-detect-notepad-vulnerability-1
- https://www.vicarius.io/vsociety/posts/cve-2025-49144-mitigate-notepad-vulnerability
- https://www.vicarius.io/vsociety/posts/cve-2025-49144-mitigate-notepad-vulnerability-1
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.