Categories: Cyber Security News

New Chrome Zero-Day Vulnerability Under Active Exploitation – Patch Now

Google has pushed an urgent security update for its Chrome desktop browser to fix 21 vulnerabilities, including a critical zero-day flaw that is already being actively exploited in the wild. All Chrome users are strongly urged to update immediately.

Targeted Version

The patched version is 146.0.7680.177/.178 for Windows and Mac, and 146.0.7680.177 for Linux. Users can update by navigating to Chrome Menu → Help → About Google Chrome, where the browser will automatically download and apply the fix upon restart.

The most dangerous flaw patched in this release is CVE-2026-5281, a high-severity “use after free” memory corruption bug found in Chrome’s Dawn graphics component.

Google has officially confirmed that an active exploit exists in the wild, meaning threat actors are already using it in targeted attack campaigns.

Use-after-free bugs occur when a program continues to use a memory pointer after that memory has been freed.

Attackers can exploit this to execute arbitrary malicious code or trigger system crashes, often simply by luring a victim to visit a compromised or malicious website.

20 Additional High-Severity Fixes

Alongside the zero-day, Google patched 20 other vulnerabilities reported by external security researchers and internal teams.

The majority are high-severity memory safety issues, including:

  • Heap buffer overflows in GPU and ANGLE
  • Use-after-free bugs in CSS, Web MIDI, WebCodecs, WebGL, Dawn, PDF, WebView, Navigation, and Compositing
  • Integer overflows in Codecs and ANGLE
  • Object corruption in the V8 JavaScript engine
  • Out-of-bounds reads in WebCodecs
  • Insufficient policy enforcement in WebUSB

These fixes were aided by Google’s internal testing tools AddressSanitizer and MemorySanitizer, which detect memory corruption vulnerabilities before they reach stable releases.

CVE ID Severity Component Issue Type
CVE-2026-5272 High GPU Heap buffer overflow
CVE-2026-5273 High CSS Use after free
CVE-2026-5274 High Codecs Integer overflow
CVE-2026-5275 High ANGLE Heap buffer overflow
CVE-2026-5276 High WebUSB Insufficient policy enforcement
CVE-2026-5277 High ANGLE Integer overflow
CVE-2026-5278 High Web MIDI Use after free
CVE-2026-5279 High V8 Object corruption
CVE-2026-5280 High WebCodecs Use after free
CVE-2026-5281 High Dawn Use after free (Zero-Day)
CVE-2026-5282 High WebCodecs Out of bounds read
CVE-2026-5283 High ANGLE Inappropriate implementation
CVE-2026-5284 High Dawn Use after free
CVE-2026-5285 High WebGL Use after free
CVE-2026-5286 High Dawn Use after free
CVE-2026-5287 High PDF Use after free
CVE-2026-5288 High WebView Use after free
CVE-2026-5289 High Navigation Use after free
CVE-2026-5290 High Compositing Use after free
CVE-2026-5291 Medium WebGL Inappropriate implementation
CVE-2026-5292 Medium WebCodecs Out of bounds read

Security teams and enterprise administrators should prioritize deploying this patch across all Chrome-based environments immediately to block remote code execution attempts.

The browser will automatically apply the update upon a simple restart, effectively closing the exploitation window for attackers.

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The post New Chrome Zero-Day Vulnerability Under Active Exploitation – Patch Now appeared first on Cyber Security News.

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