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I. Basic Information for CVE-2026-6539
Vulnerability Information

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Vulnerability Title
Notepad++ 8.9.3 Format String Injection via nativeLang.xml
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用外部控制的格式字符串
Source: NVD (National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
Notepad++Notepad++ 0 ~ 8.9.4 -
II. Public POCs for CVE-2026-6539
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III. Intelligence Information for CVE-2026-6539
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IV. Related Vulnerabilities
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