🛡️ CVE-2026-6539
🟡 CVSS 4.4 — Medium ✅ No Known Exploit CWE-134 NVD
4.4
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Notepad++ 8.9.3 contains a format string injection vulnerability in the Find Results panel handler that allows attackers to cause denial of service and information disclosure by crafting a malicious nativeLang.xml language pack file. Attackers can distribute a poisoned language pack through community channels that triggers format string interpretation when a user performs search operations, leading to access violations and potential leakage of stack or register contents.

Details

Severity MEDIUM
CVSS Score 4.4
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
CWE CWE-134
Public Exploit ✅ No
Source NVD
Published 2026-04-30
Updated 2026-06-02
Modified 2026-05-01
Fix URL N/A

Affected Packages

Software From version Fixed in
notepad\+\+

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