Multiple vulnerabilities in Mozilla Firefox

Description

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

Below is a complete list of vulnerabilities:

1. Memory safety vulnerability can be exploited to execute arbitrary code.
2. Heap buffer overflow vulnerability in Audio/Video: Playback can be exploited to cause denial of service.
3. Security vulnerability in CSS Parsing and Computation can be exploited to bypass security restrictions.

Original advisories

• MFSA2026-19

Exploitation

Related products

• Mozilla-Firefox

CVE list

• CVE-2026-3845
  critical
• CVE-2026-3846
  high
• CVE-2026-3847
  critical

Read more

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