An Untrusted search path vulnerability in notepad++ 6.5 allows local users to gain escalated privileges through the msimg32.dll file in the current working directory.

A vulnerability classified as problematic was found in NotePad++ up to 8.1. Affected by this vulnerability is an unknown functionality of the file dbghelp.exe. The manipulation leads to uncontrolled search path. An attack has to be approached locally. The identifier VDB-246421 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Notepad++ is a free and open-source source code editor. Versions 8.5.6 and prior are vulnerable to heap buffer read overflow in `FileManager::detectLanguageFromTextBegining `. The exploitability of this issue is not clear. Potentially, it may be used to leak internal memory allocation information. As of time of publication, no known patches are available in existing versions of Notepad++.

Notepad++ is a free and open-source source code editor. Versions 8.5.6 and prior are vulnerable to global buffer read overflow in `nsCodingStateMachine::NextStater`. The exploitability of this issue is not clear. Potentially, it may be used to leak internal memory allocation information. As of time of publication, no known patches are available in existing versions of Notepad++.

Notepad++ is a free and open-source source code editor. Versions 8.5.6 and prior are vulnerable to global buffer read overflow in `CharDistributionAnalysis::HandleOneChar`. The exploitability of this issue is not clear. Potentially, it may be used to leak internal memory allocation information. As of time of publication, no known patches are available in existing versions of Notepad++.

Notepad++ is a free and open-source source code editor. Versions 8.5.6 and prior are vulnerable to heap buffer write overflow in `Utf8_16_Read::convert`. This issue may lead to arbitrary code execution. As of time of publication, no known patches are available in existing versions of Notepad++.

Notepad++ v8.4.1 was discovered to contain a stack overflow via the component Finder::add().

Buffer overflow in function Notepad_plus::addHotSpot in Notepad++ v8.4.3 and earlier allows attackers to crash the application via two crafted files.

Notepad++ versions 8.4.1 and before are vulnerable to DLL hijacking where an attacker can replace the vulnerable dll (UxTheme.dll) with his own dll and run arbitrary code in the context of Notepad++.

SciLexer.dll in Scintilla in Notepad++ (x64) before 7.7 allows remote code execution or denial of service via Unicode characters in a crafted .ml file.

Notepad++ 7.3.3 (32-bit) with Hex Editor Plugin v0.9.5 might allow user-assisted attackers to execute code via a crafted file, because of a "Data from Faulting Address controls Code Flow" issue. One threat model is a victim who obtains an untrusted crafted file from a remote location and issues several user-defined commands.

Buffer overflow in NotePad++ 6.6.9 allows remote attackers to have unspecified impact via a long Time attribute in an Event element in an XML file. NOTE: this issue was originally incorrectly mapped to CVE-2014-1004; see CVE-2014-1004 for more information.

The GUP generic update process in Notepad++ before 4.8.1 does not properly verify the authenticity of updates, which allows man-in-the-middle attackers to execute arbitrary code via a Trojan horse update, as demonstrated by evilgrade and DNS cache poisoning.

Multiple buffer overflows in system DLL files in Microsoft Windows XP, as used by Microsoft Windows Explorer (explorer.exe) 6.00.2900.2180, Don Ho Notepad++, unspecified Adobe Macromedia applications, and other programs, allow user-assisted remote attackers to cause a denial of service (application crash) via long strings in the (1) author, (2) title, (3) subject, and (4) comment Properties fields of a file, possibly involving improper handling of extended file attributes by the (a) NtQueryInformationFile, (b) NtQueryDirectoryFile, (c) NtSetInformationFile, (d) FileAllInformation, (e) FileNameInformation, and other FILE_INFORMATION_CLASS functions in ntdll.dll and the (f) GetFileAttributesExW and (g) GetFileAttributesW functions in kernel32.dll, a related issue to CVE-2007-1347.

Stack-based buffer overflow in LexRuby.cxx (SciLexer.dll) in Scintilla 1.73, as used by notepad++ 4.1.1 and earlier, allows user-assisted remote attackers to execute arbitrary code via certain Ruby (.rb) files with long lines. NOTE: this was originally reported as a vulnerability in notepad++.