CVE-2026-48770
| Summary |
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.
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| Publication Date |
June 27, 2026, 6:16 a.m. |
| Registration Date |
June 29, 2026, 4:17 a.m. |
| Last Update |
June 27, 2026, 6:16 a.m. |
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CVSS3.1 : MEDIUM
|
| スコア |
5.0
|
| Vector |
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H |
| 攻撃元区分(AV) |
ローカル |
| 攻撃条件の複雑さ(AC) |
低 |
| 攻撃に必要な特権レベル(PR) |
低 |
| 利用者の関与(UI) |
要 |
| 影響の想定範囲(S) |
変更なし |
| 機密性への影響(C) |
なし |
| 完全性への影響(I) |
なし |
| 可用性への影響(A) |
高 |
Related information, measures and tools
Common Vulnerabilities List