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    Dashboard / CVE / CVE-2026-5525

    CVE-2026-5525

    A stack-based buffer overflow vulnerability exists in Notepad++ version 8.9.3 in the file drop handler component. When a user drags and drops a directory path of exactly 259 characters without a trailing backslash, the application appends a backslash and null terminator without proper bounds checking, resulting in a stack buffer overflow and application crash (STATUS_STACK_BUFFER_OVERRUN).

    Published:Apr 10, 2026
    Last Modified:Jun 5, 2026
    EPS:Apr 10, 2026
    EPSS Score:0.00013
    CVSS Score:6

    Affected Products

    Vendor
    Notepad++
    Product
    Notepad++
    Vendor
    Notepad-plus-plus
    Product
    Notepad++
    Vendor
    Notepad-plus-plus
    Product
    Notepad\+\+

    Exploits

    https://github.com/notepad-plus-plus/notepad-plus-plus/issues/17921https://github.com/notepad-plus-plus/notepad-plus-plus/issues/17921

    Common Weakness Enumeration

    CWE-121 Stack-based Buffer Overflow

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High