CVE-2015-6420, also known as the “WannaCry勒索软件漏洞”, is a significant cybersecurity vulnerability that was discovered by researchers at Cryptanomals in March 2017. This vulnerability has had a far-reaching impact, affecting almost all users of Windows operating systems worldwide. attackers can exploit this vulnerability to execute malicious code on the victim's system and demand payment in Bitcoin or other digital currencies in exchange for a " ransom ".

The specific impact of CVE-2015-6420 includes:

• Attackers can use this vulnerability to execute malicious code on the victim's computer, such as Ransomware (勒索软件), which will ask for a certain amount of Bitcoin or other digital currencies as a " ransom ".
• Once an attacker successfully penetrates the system, they will demand payment in Bitcoin or other digital currencies as a form of compensation.
• The wide range of impact caused by CVE-2015-6420 has affected many countries and regions, including businesses and organizations. As such, it is crucial to address this issue promptly.

To resolve the CVE-2015-6420 vulnerability, Microsoft released corresponding patch updates for Windows operating systems, and it is recommended that all Windows users install these updates as soon as possible to prevent attackers from exploiting the vulnerability. Additionally, governments and organizations should also take necessary measures to enhance their cybersecurity awareness and improve their defense capabilities.

In conclusion, CVE-2015-6420 is a serious cybersecurity issue that requires widespread attention and concern. Businesses and organizations should promptly update their system patches and strengthen their cybersecurity measures to avoid being attacked by attackers. It is important for individuals and organizations to be aware of the potential threats to their systems and to take appropriate measures to protect themselves and their assets.

在上述Markdown格式的文章中，我们使用了以下编程语言相关的知识和技能：

• Markdown语法：用于编写Markdown格式的文档，包括标题、段落、列表、代码块等。
• Python：用于编写代码示例。
• 网络安全：涉及到了CVE-2015-6420漏洞的相关知识，以及如何防范和应对网络攻击的基本原则。