Mozilla Products Multiple Vulnerabilities

Release Date: 11 Jun 2025

RISK: Medium Risk

TYPE: Clients - Browsers

Multiple vulnerabilities were identified in Mozilla Products. A remote attacker could exploit some of these vulnerabilities to trigger denial of service condition, security restriction bypass and sensitive information disclosure on the targeted system.

---

Impact

• Information Disclosure
• Denial of Service
• Security Restriction Bypass

---

System / Technologies affected

Versions prior to:

 

• Thunderbird 128.11.1
• Thunderbird 139.0.2
• Firefox 139.0.4

---

Solutions

Before installation of the software, please visit the vendor web-site for more details.

Apply fixes issued by the vendor:

 

• Thunderbird 128.11.1
• Thunderbird 139.0.2
• Firefox 139.0.4

---

Vulnerability Identifier

• CVE-2025-5986
• CVE-2025-49709
• CVE-2025-49710

---

Source

• Mozilla

---

Related Link

• https://www.mozilla.org/en-US/security/advisories/mfsa2025-47/
• https://www.mozilla.org/en-US/security/advisories/mfsa2025-49/
• https://www.mozilla.org/en-US/security/advisories/mfsa2025-50/