CVE-2026-48770
🔶 mediumSummary
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.
CVSS Score
5.0
Medium
EPSS Score
-
Published Date
2026-06-26
First Seen: 2026-06-27
📊 Relative Risk Intelligence
This CVE is Lower Risk - more severe than 19.2% of all 330,193 vulnerabilities in our database.
#266,649
Below average severity
Severity Percentile
Last Modified
2026-06-26
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
CWE IDs (Weakness Types)