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Multiple Vulnerabilities in Mozilla Thunderbird 

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

Severity Rating: HIGH

Software Affected

Mozilla Thunderbird versions prior to 145

Mozilla Thunderbird versions prior to 140.5

Overview

Multiple vulnerabilities have been reported in Mozilla Thunderbird which could allow an attacker to execute arbitrary code on the targeted system.

Target Audience:

All end-user organizations and individuals using Mozilla Thunderbird.

Risk Assessment:

High risk of system compromise and service disruptions.

Impact Assessment:

Potential for system compromise and service unavailability.

Description

These vulnerabilities exist in Mozilla Thunderbird due to Race condition in the Graphics compo-nent, Same-origin policy bypass in the DOM, Mitigation bypass in the DOM, Use-after-free in the WebRTC, Audio/Video component; Spoofing issue in Thunderbird, Incorrect boundary conditions in the Graphics, JavaScript; Race condition in the Graphics component, Sandbox escape due to incorrect boundary conditions in the Graphics, JIT miscompilation in the JavaScript Engine and Memory safety bugs. A remote attacker could exploit these vulnerabilities by convincing the victim to open a specially crafted web request.

Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary code on the targeted system.

Solution

Apply appropriate updates as mentioned by the vendor:

https://www.mozilla.org/en-US/security/advisories/mfsa2025-90/

https://www.mozilla.org/en-US/security/advisories/mfsa2025-91/

References

Mozilla

https://www.mozilla.org/en-US/security/advisories/mfsa2025-90/

https://www.mozilla.org/en-US/security/advisories/mfsa2025-91/

CVE Name

CVE-2025-13012

CVE-2025-13013

CVE-2025-13014

CVE-2025-13015

CVE-2025-13016

CVE-2025-13017

CVE-2025-13018

CVE-2025-13019

CVE-2025-13020

CVE-2025-13021

CVE-2025-13022

CVE-2025-13023

CVE-2025-13024

CVE-2025-13025

CVE-2025-13026

CVE-2025-13027

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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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