WinRAR flaw lets hackers run programs when you open RAR archives

The flaw is tracked as CVE-2023-40477 and could give remote attackers arbitrary code execution on the target system after a specially crafted RAR file is opened.

RARLAB released WinRAR version 6.23 on August 2nd, 2023, effectively addressing CVE-2023-40477.

WinRAR users are strongly advised to apply the available security update immediately.

Apart from the RAR4 recovery volumes processing code fix, version 6.23 addresses an issue with specially crafted archives leading to wrong file initiation, which is also considered a high-severity problem.

Those continuing to use WinRAR must keep the software updated, as similar flaws in the past were abused by hackers to install malware.

Apart from that, being cautious with what RAR files you open and using an antivirus tool that can scan archives would be a good security measure.

Share this article on social media:

Subscribe to Our Newsletter!
Stay on top of cybersecurity risks, evolving threats and industry news.
This field is for validation purposes and should be left unchanged.

The Latest Cybersecurity News

From major cyberattacks, newly discovered critical vulnerabilities to recommended best practices, read it here first:

Tell us About your Needs
Get an Answer the Same Business Day

Got an urgent request? Call us at 1-877-805-7475 or Book a meeting.

What happens next:

  • We reach out to learn about your objectives
  • We work together to define your project’s scope
  • You get an all-inclusive, no engagement proposal
This field is for validation purposes and should be left unchanged.


Enter your Email Address

This field is for validation purposes and should be left unchanged.

* No free email provider (e.g:,, etc.)



Everything You Need to Know

Gain confidence in your future cybersecurity assessments by learning to effectively plan, scope and execute projects.
This site is registered on as a development site. Switch to a production site key to remove this banner.