Chrome 147, Firefox 150 Security Updates Rolling Out

Google and Mozilla on Tuesday announced fresh security updates for Chrome and Firefox users, addressing multiple memory safety vulnerabilities. The new Chrome 147 update is rolling out with 30 security fixes, including four for critical-severity use-after-free flaws reported by external researchers. Tracked as CVE-2026-7363, CVE-2026-7361, CVE-2026-7344, and CVE-2026-7343, the bugs impact the Canvas, iOS, Accessibility, and Views browser components. Use-after-free issues are a type of memory safety defects that occur when an application continues to point to memory that has been deallocated, and could lead to arbitrary code execution, information disclosure, or crashes. Nearly all of the remaining 26 flaws addressed in Chrome this week are memory safety bugs, including 16 high-severity use-after-free issues. High-severity out-of-bounds, buffer overflow, and type confusion bugs were also addressed. Google says it handed out $30,000 in bug bounty rewards for four of the resolved security defects, with the highest amount ($16,000) paid for a use-after-free issue in the GPU component. While most of the resolved vulnerabilities were reported by Google’s own team, the final amount might be much higher once all the rewards are disclosed. The latest Chrome iteration is now rolling out as version 147.0.7727.137/138 for Windows and macOS, and as version 147.0.7727.137 for Linux. On Tuesday, Mozilla announced the release of Firefox 150.0.1 with fixes for four security defects, including critical and high-severity memory safety bugs collectively tracked as CVE-2026-7322, CVE-2026-7323, and CVE-2026-7324. “Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code,” Mozilla notes for each CVE. The fourth issue, tracked as CVE-2026-7320, is described as an information disclosure bug rooted in incorrect boundary conditions in the Audio/Video component. Fixes for these security defects were included in the newly released Firefox ESR 140.10.1 and Firefox ESR 115.35.1 as well. The former also addresses a medium-severity sandbox escape. Related: Chrome 147 Patches 60 Vulnerabilities, Including Two Critical Flaws Worth $86,000 Related: Google Rolls Out Cookie Theft Protections in Chrome Related: Firefox Vulnerability Allows Tor User Fingerprinting Related: Claude Mythos Finds 271 Firefox Vulnerabilities WRITTEN BY Ionut Arghire Ionut Arghire is an international correspondent for SecurityWeek. More from Ionut Arghire Alleged Chinese State Hacker Extradited to US Dozens of Open VSX Extension Clones Linked to GlassWorm Malware No Patch for New PhantomRPC Privilege Escalation Technique in Windows Spectrum Security Emerges From Stealth Mode With $19 Million Incomplete Windows Patch Opens Door to Zero-Click Attacks OpenSSH Flaw Allowing Full Root Shell Access Lurked for 15 Years UNC6692 Uses Email Bombing, Social Engineering to Deploy ‘Snow’ Malware Easily Exploitable ‘Pack2TheRoot’ Linux Vulnerability Leads to Root Access Latest News Hundreds of Internet-Facing VNC Servers Expose ICS/OT Checkmarx Confirms Data Stolen in Supply Chain Attack Iranian Cyber Group Handala Targets US Troops in Bahrain 38 Vulnerabilities Found in OpenEMR Medical Software Critical GitHub Vulnerability Exposed Millions of Repositories Cyber Insurance Data Gives CISOs New Ammo for Budget Talks Vimeo Confirms User and Customer Data Breach The Mythos Moment: Enterprises Must Fight Agents with Agents Trending Webinar: A Step-By-Step Approach To AI Governance April 28, 2026 With "Shadow AI" usage becoming prevalent in organizations, learn how to balance the need for rapid experimentation with the rigorous controls required for enterprise-grade deployment. Register Virtual Event: Threat Detection And Incident Response Summit May 20, 2026 Delve into big-picture strategies to reduce attack surfaces, improve patch management, conduct post-incident forensics, and tools and tricks needed in a modern organization. Register People on the Move MongoDB has appointed Doug Bowers as Chief Information Security Officer. Ben Wilkens has been promoted to Director of Cybersecurity at NMFTA. Cato Networks has appointed Meital Koren as Chief Legal Officer. More People On The Move Expert Insights The Mythos Moment: Enterprises Must Fight Agents With Agents Only with the right platform and an agentic, AI-driven defense, will enterprises be able to protect themselves in the agentic era. (Etay Maor) Why Cybersecurity Must Rethink Defense In The Age Of Autonomous Agents From autonomous code generation to decision-making systems that initiate actions without human intervention, the industry is entering a new phase. (Torsten George) Government Can’t Win The Cyber War Without The Private Sector Securing national resilience now depends on faster, deeper partnerships with the private sector. (Steve Durbin) The Hidden ROI Of Visibility: Better Decisions, Better Behavior, Better Security Beyond monitoring and compliance, visibility acts as a powerful deterrent, shaping user behavior, improving collaboration, and enabling more accurate, data-driven security decisions. (Joshua Goldfarb) The New Rules Of Engagement: Matching Agentic Attack Speed The cybersecurity response to AI-enabled nation-state threats cannot be incremental. It must be architectural. (Nadir Izrael) Flipboard Reddit Whatsapp Email