Vulnocalypse
Back to feed
22impact

Notepad++ 8.9.3 Format String Injection via nativeLang.xml

Notepad++ · CVE-2026-6539
0 news outlets1 CERTs and agencies0 researchers

What is it?

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.

Evidence

CERTs and agencies (1)

Exploitation

  • Public proof of concept
  • Exploited in the wild
  • Listed as known exploited
CVSS
4.4
EPSS
0.2%
First seen
4 h ago
Status
confirmed

All Notepad++ vulnerabilities