Cyber999 Advisories

10 October 2025     Advisory

MA-1398.102025: MyCERT Advisory - Security Updates – Mozilla


1.0 Introduction
Recently, Mozilla has released security updates to address multiple vulnerabilities in its product.

2.0 Impact
These vulnerabilities could allow attackers to escape the browser sandbox, execute arbitrary code, or spoof trusted websites.

3.0 Affected Products

  • Thunderbird versions prior to 140.3
  • Thunderbird versions prior to 143
  • Focus for iOS versions prior to143.0
  • Firefox ESR versions prior to 140.3
  • Firefox ESR versions prior to 115.28
  • Firefox versions prior to 143


4.0 Recommendations
CyberSecurity Malaysia encourages users and administrators to review the following  Mozilla security advisory  and apply the necessary updates:

Kindly refer to the following URLs for more information: 

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 Cyber999 Incident the 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.cybersecurity.my

5.0 References

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CyberSecurity Malaysia is the national cyber security specialist agency under the purview of the Ministry of Digital (KD)
 
Contact Us

  • CyberSecurity Malaysia,
    Level 7 Tower 1, Menara Cyber Axis, Jalan Impact,
    63000 Cyberjaya, Selangor Darul Ehsan, Malaysia.

  • enquiry@cybersecurity.my

  • +603 - 8800 7999

  • +603 - 8008 7000

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