Multiple vulnerabilities in Mozilla Firefox ESR

Description

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

Below is a complete list of vulnerabilities:

1. Security vulnerability can be exploited to bypass security restrictions.
2. Security vulnerability in the DOM: Networking component can be exploited to bypass security restrictions.
3. Security vulnerability in the DOM: Navigation component can be exploited to bypass security restrictions.
4. A remote code execution vulnerability in the Graphics: Text component can be exploited remotely to execute arbitrary code.
5. Security vulnerability in the Remote Settings Client component can be exploited to bypass security restrictions.
6. A remote code execution vulnerability in the Graphics: ImageLib component can be exploited remotely to execute arbitrary code.
7. Information disclosure vulnerability in the Graphics: Text component can be exploited to obtain sensitive information.
8. Denial of service vulnerability in the Graphics: CanvasWebGL component can be exploited remotely to cause denial of service.
9. Information disclosure vulnerability in the Graphics component can be exploited to obtain sensitive information.
10. A remote code execution vulnerability in the Layout: Text and Fonts component can be exploited remotely to execute arbitrary code.
11. A remote code execution vulnerability in the Graphics component can be exploited remotely to execute arbitrary code.
12. Security vulnerability in the Graphics: ImageLib component can be exploited to bypass security restrictions.

Fiches de renseignement originales

• MFSA2026-75

Exploitation

Public exploits exist for this vulnerability.

Produits associés

• Mozilla-Firefox-ESR

Liste CVE

• CVE-2026-74934
  critical
• CVE-2026-74935
  critical
• CVE-2026-74939
  critical
• CVE-2026-74940
  critical
• CVE-2026-74942
  critical
• CVE-2026-74943
  critical
• CVE-2026-74945
  high
• CVE-2026-74946
  critical
• CVE-2026-74948
  high
• CVE-2026-74969
  critical
• CVE-2026-74973
  warning
• CVE-2026-74974
  high
• CVE-2026-74990
  critical

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