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Multiple Vulnerabilities in Mozilla Products

Indian – Computer Emergency Response Team (https://www.cert-in.org.in)

Severity Rating: HIGH

Software Affected

Mozilla Firefox versions prior to 151

Mozilla Firefox ESR versions prior to 115.36

Mozilla Firefox ESR versions prior to 140.11

Mozilla Firefox for iOS versions prior to 151.0

Mozilla Thunderbird versions prior to 140.11

Mozilla Thunderbird versions prior to 151

Overview

Multiple vulnerabilities have been reported in Mozilla products which could be exploited by a remote attacker to execute arbitrary code, obtain sensitive information, perform spoofing attack, bypass security restriction or cause Denial of service (DoS) condition on the targeted system.

Target Audience:

All end-user organizations and individuals using Mozilla Products.

Risk Assessment:

High risk of unauthorized access to sensitive information.

Impact Assessment:

Potential for data theft, sensitive information disclosure and complete compromise of system.

Description

Mozilla Firefox is a free and open-source web browser developed by Mozilla foundation, while Firefox ESR (Extended support Release) is a stable version tailored for organizations that require long-term support with only security and maintenance updates.

Multiple vulnerabilities exist in Mozilla products due to invalid pointer in the Audio/Video: Web Codecs component; Incorrect boundary conditions in the Audio/Video: Web Codecs component JavaScript Engine: JIT component, Integer overflow in the Audio/Video component; Information disclosure in the DOM: Security component, Graphics: WebGPU component, IP Protection component; Sandbox escape in the Security: Process Sandboxing component; Integer overflow in the Networking: JAR component, Widget: Win32 component; Issue in JavaScript Engine component; Memory safety bugs, Mitigation bypass in the DOM: Security component, Privilege escalation in the Application Update component, DOM: Workers component, Enterprise Policies component, Security component, WebRTC: Audio/Video component; Same-origin policy bypass in the DOM: Networking component, Networking: HTTP component, Networking: JAR component; Incorrect boundary conditions in the Widget: Win32 component; Use-after-free in the Dis-ability Access APIs component; Sandbox escape in Profile Backup component; Spoofing issue in the Form Autofill component, Popup Blocker component, Toolbar component in Firefox for Android, Web Speech component, WebExtensions; Use-after-free in the DOM: Bindings (WebIDL) component. A remote attacker could exploit these vulnerabilities by convincing a victim to open a specially crafted web request.

Successful exploitation of these vulnerabilities could allow a remote attacker to execute arbitrary code, perform spoofing attack, bypass security restriction or cause Denial of service (DoS) condition on the targeted system.

Solution

Apply appropriate updates as mentioned by the vendor:

https://www.mozilla.org/en-US/security/advisories/mfsa2026-51/

https://www.mozilla.org/en-US/security/advisories/mfsa2026-50/

https://www.mozilla.org/en-US/security/advisories/mfsa2026-49/

https://www.mozilla.org/en-US/security/advisories/mfsa2026-48/

https://www.mozilla.org/en-US/security/advisories/mfsa2026-47/

https://www.mozilla.org/en-US/security/advisories/mfsa2026-46/

References

Mozilla

https://www.mozilla.org/en-US/security/advisories/mfsa2026-51/

https://www.mozilla.org/en-US/security/advisories/mfsa2026-50/

https://www.mozilla.org/en-US/security/advisories/mfsa2026-49/

https://www.mozilla.org/en-US/security/advisories/mfsa2026-48/

https://www.mozilla.org/en-US/security/advisories/mfsa2026-47/

https://www.mozilla.org/en-US/security/advisories/mfsa2026-46/

CVE Name

CVE-2026-8388

CVE-2026-8391

CVE-2026-8401

CVE-2026-8706

CVE-2026-8945

CVE-2026-8946

CVE-2026-8947

CVE-2026-8948

CVE-2026-8949

CVE-2026-8950

CVE-2026-8951

CVE-2026-8952

CVE-2026-8953

CVE-2026-8954

CVE-2026-8955

CVE-2026-8956

CVE-2026-8957

CVE-2026-8958

CVE-2026-8959

CVE-2026-8960

CVE-2026-8961

CVE-2026-8962

CVE-2026-8963

CVE-2026-8964

CVE-2026-8965

CVE-2026-8966

CVE-2026-8967

CVE-2026-8968

CVE-2026-8969

CVE-2026-8970

CVE-2026-8971

CVE-2026-8972

CVE-2026-8973

CVE-2026-8974

CVE-2026-8975

 

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Thanks and Regards,

CERT-In

Incident Response Help Desk

e-mail: incident@cert-in.org.in

Phone: +91-11-22902657

Toll Free Number: 1800-11-4949

Toll Free Fax : 1800-11-6969

Web: http://www.cert-in.org.in

PGP Fingerprint: A768 083E 4475 5725 B81A A379 2156 C0C0 B620 D0B4

PGP Key information:

https://www.cert-in.org.in/s2cMainServlet?pageid=CONTACTUS

Postal address:

Indian Computer Emergency Response Team (CERT-In)

Ministry of Electronics and Information Technology

Government of India

Electronics Niketan

6, C.G.O. Complex

New Delhi-110 003

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