Multiple vulnerabilities in Mozilla Firefox

Description

Multiple vulnerabilities were found in Mozilla Firefox. Malicious users can exploit these vulnerabilities to bypass security restrictions, cause denial of service, execute arbitrary code.

Below is a complete list of vulnerabilities:

1. Denial of service vulnerability in the JavaScript Engine: JIT component can be exploited remotely to cause denial of service.
2. JIT miscompilation in the JavaScript Engine: JIT component
3. A remote code execution vulnerability in the JavaScript: WebAssembly component can be exploited remotely to execute arbitrary code.
4. Denial of service vulnerability in the JavaScript Engine component can be exploited remotely to cause denial of service.
5. Security vulnerability in the Profile Backup component can be exploited to bypass security restrictions.

Original advisories

• MFSA2026-45

Exploitation

Related products

• Mozilla-Firefox

CVE list

• CVE-2026-8388
  high
• CVE-2026-8389
  unknown
• CVE-2026-8390
  unknown
• CVE-2026-8391
  unknown
• CVE-2026-8401
  unknown

Read more

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