What is CVE-2023-40031?

CVE-2023-40031 is a high-severity vulnerability affecting Notepad++ versions up to and including 8.5.6. This issue, which involves a heap buffer write overflow, can potentially lead to arbitrary code execution on systems running the affected Notepad++ versions. Users of this popular open-source source code editor should be aware of the risk and keep an eye out for updates addressing this vulnerability.

Who is impacted by CVE-2023-40031?

This issue is related to a heap buffer write overflow, which could potentially lead to arbitrary code execution on affected systems. It's important for users of Notepad++ to be aware of this vulnerability and monitor for updates addressing the issue.

What should I do if I’m affected?

If you're affected by the CVE-2023-40031 vulnerability, it's important to take action to protect your system. Follow these steps:

1. Update Notepad++ to the latest version with fixes for the vulnerabilities.

2. Be cautious when opening files from untrusted sources, as they may exploit the vulnerability.

Is this in CISA’s Known Exploited Vulnerabilities Catalog?

The CVE-2023-40031 vulnerability in Notepad++ is not listed in CISA's Known Exploited Vulnerabilities Catalog. This issue, known as a heap-based buffer overflow, was published on August 25, 2023.

Weakness Enumeration

The weakness enumeration for this vulnerability is categorized as CWE-122 Heap-based Buffer Overflow and CWE-120 Buffer Copy without Checking Size of Input.

Learn More

For a comprehensive understanding of this issue, including its description, severity, technical details, and known affected software configurations, refer to the NVD page or the sources listed below.

• NVD - CVE-2023-40031

• GitHub Security Lab - Buffer Overflows in Notepad++