Open Nav
Sign Up

CISA: Mozilla Releases Security Updates for Firefox and Thunderbird to Address Critical Vulnerabilities

Bar Refael

February 25, 2024

Mozilla has issued critical security updates for Firefox, Firefox ESR, and Thunderbird to address several vulnerabilities. These vulnerabilities, if exploited, could allow a cyber threat actor to take control of an affected system, leading to potential data theft, system compromise, or further network infiltration.

Details: 

The vulnerabilities addressed in these updates are varied in nature and include issues such as buffer overflows, use-after-free errors, and cross-site scripting (XSS) vulnerabilities. These vulnerabilities are particularly concerning as they could allow remote attackers to execute arbitrary code on the user’s system or manipulate the affected software in unintended ways.

Affected Products:

  • Firefox (versions prior to 110.0)
  • Firefox ESR (versions prior to 102.12)
  • Thunderbird (versions prior to 102.12)

Mitigation: 

Mozilla has released the following security advisories with details on the vulnerabilities and the necessary updates:

  • MFSA 2024-05 for Firefox: This advisory addresses multiple vulnerabilities in Firefox 110.0. Users are advised to update to Firefox 110.0 or later to mitigate these risks.
  • MFSA 2024-06 for Firefox ESR: This advisory covers several vulnerabilities in Firefox ESR 102.12. Users should update to Firefox ESR 102.12 or later to ensure protection.
  • MFSA 2024-07 for Thunderbird: This advisory details vulnerabilities in Thunderbird 102.12. It is recommended to update to Thunderbird 102.12 or later to address these security issues.

CISA Recommendations: 

The Cybersecurity and Infrastructure Security Agency (CISA) strongly encourages users and administrators to review the Mozilla Security Advisories and apply the necessary updates as soon as possible to prevent potential exploitation by cyber threat actors.

Stay safe and informed,

OP Innovate Research Team.

Resources highlights

CVE-2026-21509: Actively Exploited Microsoft Office Security Bypass

CVE-2026-21509 is a zero-day security feature bypass vulnerability in Microsoft Office that has been confirmed as actively exploited in the wild. The flaw allows adversaries…

Read more >

cve-2026-21509

Guidance to Address Ongoing Exploitation of Fortinet SSO Vulnerability (CVE-2026-24858)

CVE-2026-24858 is a critical authentication bypass in FortiCloud Single Sign-On (SSO) that can allow an attacker with a FortiCloud account and a registered device to…

Read more >

cve-2026-24858

CVE-2024-37079: VMware vCenter Server DCERPC Heap Overflow (RCE)

CVE-2024-37079 is a critical remote code execution (RCE) vulnerability in VMware vCenter Server caused by a heap overflow in the DCERPC protocol implementation. On January…

Read more >

cve-2024-37079

CVE-2026-24061: GNU Inetutils telnetd Remote Authentication Bypass

CVE-2026-24061 is a pre-authentication remote authentication bypass in GNU Inetutils telnetd. The flaw carries a Critical CVSS:3.1 severity score of 9.8 and allows an attacker…

Read more >

CVE-2026-24061

CVE-2026-0227: PAN-OS GlobalProtect Denial-of-Service Vulnerability

CVE-2026-0227 is a high-severity denial-of-service vulnerability affecting Palo Alto Networks PAN-OS and Prisma Access deployments where GlobalProtect Gateway or Portal is enabled. The flaw allows…

Read more >

cve-2026-0227

CVE-2026-20805: Windows Desktop Window Manager (DWM) Zero-Day

CVE-2026-20805 is a Windows Desktop Window Manager (DWM) information disclosure vulnerability that has been exploited in the wild as a zero-day.While the CVSS v3.1 base…

Read more >

cve-2026-20805
Under Cyber Attack?

Fill out the form and we will contact you immediately.