Categories: PrivacyTor

Tor Browser 8.5.3 Released With Fixes for Critical Zero-day Security Update in Firefox

Tor Browser 8.5.3 released with the fixes for critical Sandbox Escape zero-day vulnerability in Firefox, and it results in executing arbitrary code on the user’s computer.

Mozilla recently released Firefox 67.0.3 with a security update for a type of confusion zero-day vulnerability.

Tor Browser 8.5.2 released soon after the Mozilla a patch for first zero-day, a type confusion vulnerability which can be triggered when attackers are manipulating JavaScript objects in Firefox.

After 2 days, Mozilla released another version of Firefox 67.0.4 with the fixes for the second zero-day vulnerability, a sandbox escape vulnerability that allows an attacker to execute the malicious code remotely and gain complete control of the system.

Since Firefox 67.0.4 released, Tor prepared and applied the necessary patch for the Sandbox Escape flaw with its new Tor Browser 8.5.3 version.

Currently, Tor released an update only for Desktop version and promised to release the update for Android version within this weekend since their team is currently traveling to an event, so they are unable to access our Android signing token.

According to Tor, We expect to be able to publish the Android release this weekend. In the meantime, Android users should use the safer or safest security levels. The security level on Android can be changed by going in the menu on the right of the URL bar and selecting Security Settings.

You can Download Tor Browser 8.5.3 from Here Tor Browser and distribution directory for Windows, Mac, and Linux.

You can check manually whether your browser is up to date by navigating Tor Browser menu -> Help -> About Tor Browser.

Follow us on LinkedinTwitterFacebook for daily Cybersecurity updates also you can take the Best Cybersecurity course online to keep your self-updated.

Balaji

BALAJI is an Ex-Security Researcher (Threat Research Labs) at Comodo Cybersecurity. Editor-in-Chief & Co-Founder - Cyber Security News & GBHackers On Security.

Recent Posts

Cisco Nexus Vulnerability Allows Attackers to Inject Malicious Commands

Cisco Systems has issued a critical security advisory for a newly disclosed command injection vulnerability…

6 minutes ago

New Wi-Fi Jamming Attack Can Disable Specific Devices

A newly discovered Wi-Fi jamming technique enables attackers to selectively disconnect individual devices from networks…

15 minutes ago

GitLab Vulnerabilities Allow Attackers to Bypass Security and Run Arbitrary Scripts

GitLab has urgently released security updates to address multiple high-severity vulnerabilities in its platform that…

2 hours ago

LibreOffice Flaws Allow Attackers to Run Malicious Files on Windows

A high-severity security vulnerability (CVE-2025-0514) in LibreOffice, the widely used open-source office suite, has been…

2 hours ago

Cisco Nexus Switch Vulnerability Allows Attackers to Cause DoS

Cisco Systems has disclosed a high-severity vulnerability (CVE-2025-20111) in its Nexus 3000 and 9000 Series…

3 hours ago

Silver Fox APT Hackers Target Healthcare Services to Steal Sensitive Data

A sophisticated cyber campaign orchestrated by the Chinese Advanced Persistent Threat (APT) group, Silver Fox,…

12 hours ago