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Notepad++ 8.9.9 Fixes Six Security Flaws, Including Authentication Bypass and Privilege Escalation

Notepad++ 8.9.9, released on November 6, 2026, patches six memory-safety and trust-boundary defects, including a WM_COPYDATA sender authentication bypass and a…

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Notepad++ 8.9.9, released on November 6, 2026, patches six memory-safety and trust-boundary defects, including a WM_COPYDATA sender authentication bypass and a WM_COPYDATA-driven privilege escalation. Maintainer Don Ho published a GitHub advisory for each, covering version 8.9.8 and earlier. The authentication bypass (CWE-940) sits in... Weiterlesen: Notepad++ 8.9.9 Fixes Six Security Flaws, Including Authentication By…

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