7.5
CWE
404
EPSS
0.056%
Advisory Published
CVE Published
Updated

CVE-2024-9399

First published: Tue Oct 01 2024(Updated: )

A website configured to initiate a specially crafted WebTransport session could crash the Firefox process leading to a denial of service condition.

Credit: security@mozilla.org security@mozilla.org

Affected SoftwareAffected VersionHow to fix
debian/firefox
131.0.2-2
debian/thunderbird<=1:115.12.0-1~deb11u1<=1:115.15.0-1~deb11u1<=1:115.12.0-1~deb12u1<=1:115.15.0-1~deb12u1<=1:128.2.0esr-1
1:128.3.0esr-1
Thunderbird<131
131
Thunderbird<128.3
128.3
Firefox<128.3.0
Firefox>=129.0<131.0
Thunderbird<128.3.0
Thunderbird>=129.0<131.0
Firefox<131
131
Firefox ESR<128.3
128.3

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2024-9399?

    CVE-2024-9399 has been categorized as a denial of service vulnerability, which can lead to crashing the Firefox process.

  • How do I fix CVE-2024-9399?

    To resolve CVE-2024-9399, upgrade Firefox to version 131 or Thunderbird to version 131 or later.

  • Which software versions are affected by CVE-2024-9399?

    CVE-2024-9399 affects Firefox versions up to 131 and Thunderbird versions up to 131.

  • What types of attacks does CVE-2024-9399 enable?

    CVE-2024-9399 enables attackers to initiate specially crafted WebTransport sessions that could cause crashes.

  • Is CVE-2024-9399 specific to certain operating systems?

    CVE-2024-9399 is primarily a vulnerability in the Firefox and Thunderbird applications regardless of the operating system.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203