Notepad++ 5.7

Notepad++ 5.7

Don HO  ❘ Open Source
Windows
out of 404 votes
Rank 1 among competitors
Latest Version
8.8.3.0
Safe to install

Notepad++ Security Known Issues

1. Has Notepad++ experienced any critical security vulnerabilities in recent versions?

Yes, multiple security vulnerabilities have been identified in Notepad++ versions prior to 8.5.7. These include heap buffer overflows and buffer read overflows that could potentially allow attackers to execute arbitrary code by tricking users into opening specially crafted files. The most severe of these, CVE-2023-40031, involves a heap buffer write overflow in the Utf8_16_Read::convert function. Other related vulnerabilities include CVE-2023-40036, CVE-2023-40164, and CVE-2023-40166.

References:

2. Were there any incidents involving malicious plugins in Notepad++?

Yes, in April 2024, security researchers discovered that attackers had hijacked the mimeTools.dll plugin, a default component of Notepad++, injecting malicious code. This manipulated plugin was capable of executing encrypted shell code upon launching Notepad++, compromising user systems without their knowledge.

References:

3. Is Notepad++ susceptible to DLL hijacking vulnerabilities?

Yes, Notepad++ versions up to 8.4.1 were vulnerable to DLL hijacking, specifically involving the UxTheme.dll file. Attackers could exploit this by placing a malicious DLL in the application's directory, leading to arbitrary code execution when Notepad++ was launched.

References:

4. Can Notepad++ plugins be exploited for persistent system access by attackers?

Yes, threat actors have been known to abuse Notepad++'s plugin system to maintain persistence on compromised systems. By creating malicious plugins or modifying existing ones, attackers can execute arbitrary code, install keyloggers, and establish communication with command-and-control servers.

References:

5. What steps have been taken to address these security issues in Notepad++?

The Notepad++ development team has released version 8.5.7, which addresses several of the identified vulnerabilities, including CVE-2023-40031, CVE-2023-40036, CVE-2023-40164, and CVE-2023-40166. Users are strongly encouraged to update to this version to mitigate potential security risks.

References:


For a comprehensive list of known vulnerabilities in Notepad++, users can refer to the following resources:

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Installations

17,279 users of UpdateStar had Notepad++ installed last month.

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