EPSS
0.054%
Advisory Published
CVE Published
Updated

CVE-2023-5727

First published: Tue Oct 24 2023(Updated: )

The executable file warning was not presented when downloading .msix, .msixbundle, .appx, and .appxbundle files, which can run commands on a user's computer. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.* This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.

Credit: security@mozilla.org

Affected SoftwareAffected VersionHow to fix
Mozilla Firefox ESR<115.4
115.4
Mozilla Thunderbird<115.4.1
115.4.1
Mozilla Firefox<119
119
Mozilla Firefox<119.0
Mozilla Firefox ESR<115.4
Mozilla Thunderbird<115.4.1
Microsoft Windows

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-5727?

    CVE-2023-5727 is a vulnerability that allows the execution of commands on a user's computer without the warning prompt when downloading .msix, .msixbundle, .appx, and .appxbundle files in Firefox ESR versions 115.4 and earlier, as well as Firefox versions 119 and earlier.

  • How does CVE-2023-5727 affect Windows operating systems?

    CVE-2023-5727 affects Windows operating systems by not presenting the executable file warning when downloading certain file types, potentially allowing malicious commands to run on a user's computer.

  • Which versions of Firefox are affected by CVE-2023-5727?

    Firefox ESR versions 115.4 and earlier, as well as Firefox versions 119 and earlier, are affected by CVE-2023-5727.

  • What is the severity of CVE-2023-5727?

    CVE-2023-5727 has a severity rating of medium with a CVSS score of 4.0.

  • How can I fix CVE-2023-5727?

    To fix CVE-2023-5727, update your Firefox browser to the latest version available, which has addressed the vulnerability.

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