# MA-1052.032024: MyCERT Advisory - Security Updates-Zero-Day Vulnerabilities Firefox browser

**Date:** 30 Mar 2024  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-1052.032024  
**Advisory ID:** MA-1052.032024

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**1.0 Introduction**
Recently, Mozilla has released security updates to address two critical zero-day vulnerabilities in the Firefox browser.
**2.0 Impact**
A cyber threat actor could exploit some of these vulnerabilities to remotely execute malicious code on vulnerable systems, potentially compromising user data and systems.
**3.0 Affected Products**
- Mozilla Firefox
- Mozilla Firefox ESR
**4.0 Recommendations**
CyberSecurity Malaysia encourages users and administrators to review the following [security updates released by Mozilla](https://www.mozilla.org/en-US/security/advisories/) and apply the necessary updates:
- Firefox ESR 115.9.1: <https://www.mozilla.org/en-US/security/advisories/mfsa2024-15/>
- Firefox 124.0.1: <https://www.mozilla.org/en-US/security/advisories/mfsa2024-16/>
Generally, we advise users of these devices to be updated with the latest security announcements by the vendor and follow best practice security policies to determine which updates should be applied.
For further enquiries, please contact the Cyber999 Incident Response Centre through the following channels:
E-mail: cyber999[at]cybersecurity.my 
Phone: 1-300-88-2999 (monitored during business hours) 
Mobile: +60 19 2665850 (24x7 call incident reporting) 
Business Hours: Mon - Fri 08:30 -17:30 MYT 
Web: [https://www.mycert.org.my](https://www.mycert.org.my/) 
**5.0    References**
- <https://www.mozilla.org/en-US/security/advisories/>
- <https://www.mozilla.org/en-US/security/advisories/mfsa2024-16/>
- <https://www.mozilla.org/en-US/security/advisories/mfsa2024-15/>