CVE-2026-2314: Google Chrome Buffer Overflow Vulnerability

CVE-2026-2314 Overview

A heap buffer overflow vulnerability has been identified in the Codecs component of Google Chrome prior to version 145.0.7632.45. This memory corruption flaw allows a remote attacker to potentially exploit heap corruption via a crafted HTML page, leading to possible arbitrary code execution within the context of the browser.

Critical Impact

Remote attackers can exploit this heap buffer overflow through specially crafted web content, potentially achieving code execution on victim systems without requiring authentication.

Affected Products

• Google Chrome versions prior to 145.0.7632.45
• Chromium-based browsers using vulnerable codec implementations

Discovery Timeline

• 2026-02-11 - CVE-2026-2314 published to NVD
• 2026-02-12 - Last updated in NVD database

Technical Details for CVE-2026-2314

Vulnerability Analysis

This vulnerability is classified as CWE-122 (Heap-based Buffer Overflow), a critical memory safety issue that occurs when data is written beyond the allocated boundaries of a heap buffer. In the context of Google Chrome's Codecs component, improper handling of malformed or malicious media data can trigger memory corruption in the heap region.

The Codecs component is responsible for processing multimedia content including audio and video streams. When a specially crafted HTML page containing malicious media content is loaded, the vulnerable codec implementation fails to properly validate input boundaries, allowing an attacker to overflow heap memory and potentially overwrite critical data structures.

Root Cause

The root cause of this vulnerability lies in insufficient bounds checking within the Codecs processing routines. When handling media data, the codec fails to properly validate the size or structure of incoming data before writing it to heap-allocated buffers, resulting in out-of-bounds writes that can corrupt adjacent heap memory.

Attack Vector

The attack is network-based and requires user interaction - specifically, a victim must navigate to a malicious web page or be redirected to one containing the exploit payload. The attacker crafts an HTML page embedding malicious media content designed to trigger the heap overflow during codec processing.

The exploitation sequence involves:

1. The attacker hosts or injects malicious HTML content containing specially crafted media data
2. A victim user navigates to the malicious page using a vulnerable Chrome version
3. Chrome's Codecs component attempts to process the malicious media content
4. Insufficient boundary validation leads to heap buffer overflow
5. Heap corruption enables potential arbitrary code execution within the browser sandbox

For detailed technical information, see the Chromium Issue Tracker #478560268 and the Google Chrome Desktop Update announcement.

Detection Methods for CVE-2026-2314

Indicators of Compromise

• Unexpected Chrome crashes or memory access violations when loading specific web pages
• Abnormal memory consumption patterns in the Chrome browser process
• Unusual network connections originating from Chrome renderer processes
• Browser sandbox escape attempts or anomalous child process spawning

Detection Strategies

• Monitor for Chrome crash reports indicating heap corruption in Codecs-related components
• Implement network-based detection for suspicious media content delivery patterns
• Deploy endpoint detection rules to identify exploitation attempts targeting browser memory
• Analyze browser process behavior for signs of code injection or sandbox escape

Monitoring Recommendations

• Enable Chrome's built-in security logging and crash reporting mechanisms
• Monitor endpoint telemetry for browser process anomalies and unexpected behavior
• Review web proxy logs for access to known malicious domains serving exploit content
• Implement browser isolation technologies for high-risk browsing activities

How to Mitigate CVE-2026-2314

Immediate Actions Required

• Update Google Chrome to version 145.0.7632.45 or later immediately
• Enable automatic updates to ensure timely security patch deployment
• Review and restrict access to untrusted websites until patching is complete
• Consider using browser isolation for users who cannot immediately update

Patch Information

Google has released a security update addressing this vulnerability in Chrome version 145.0.7632.45. The patch is available through Chrome's automatic update mechanism and can also be downloaded directly from Google. Organizations should prioritize deployment of this update across all managed endpoints.

For official patch details, refer to the Google Chrome Desktop Update announcement.

Workarounds

• Disable or restrict media autoplay functionality in Chrome settings
• Implement web filtering to block access to untrusted or suspicious domains
• Use browser isolation solutions to contain potential exploitation attempts
• Consider deploying alternative browsers while awaiting patch deployment in enterprise environments

# Verify Chrome version and update status
# Windows (PowerShell)
Get-ItemProperty "HKLM:\SOFTWARE\Google\Chrome\BLBeacon" | Select-Object version

# macOS/Linux - Check Chrome version
google-chrome --version

# Force Chrome update check via command line (Windows)
# Navigate to chrome://settings/help to trigger manual update