CVEvulnerability

CVE-2026-48770

5.0 MEDIUM Published 2026-06-26 Modified 2026-06-29 Official page ↗
Status
Analyzed
Published
2026-06-26
Last modified
2026-06-29
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.0 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Weaknesses
CWE-125

Description

Notepad++ is a free and open-source source code editor. Prior to 8.9.6.1, a local process in the same interactive Windows session can send a malformed WM_COPYDATA message to Notepad++ using the COPYDATA_FULL_CMDLINE path. The handler appears to process COPYDATASTRUCT.lpData as an unbounded NUL-terminated wchar_t* instead of enforcing COPYDATASTRUCT.cbData. This vulnerability is fixed in 8.9.6.1.

Affected configurations

• notepad-plus-plus notepad\+\+ (< 8.9.6.1)

Related

Weakness · CWE (1)

  • CWE-125 Out-of-bounds Read weakness

References