Vulnerability Details CVE-2026-6539
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 2.0%
CVSS Severity
CVSS v3 Score 4.4
References
Products affected by CVE-2026-6539
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cpe:2.3:a:notepad-plus-plus:notepad++:8.9.3