CVE-2025-1914 Overview
CVE-2025-1914 is an out-of-bounds read vulnerability in the V8 JavaScript engine used by Google Chrome. This memory safety issue allows a remote attacker to perform out-of-bounds memory access through a specially crafted HTML page. The vulnerability affects Google Chrome versions prior to 134.0.6998.35 and has been rated as high severity by the Chromium security team.
V8 is the core JavaScript and WebAssembly engine that powers Google Chrome, Microsoft Edge, and other Chromium-based browsers. Vulnerabilities in V8 are particularly dangerous because they can be triggered simply by visiting a malicious webpage, requiring no additional user interaction beyond navigation.
Critical Impact
Remote attackers can exploit this vulnerability to read sensitive memory contents, potentially leading to information disclosure, security bypass, or further exploitation chains that could result in arbitrary code execution.
Affected Products
- Google Chrome versions prior to 134.0.6998.35
- Chromium-based browsers using affected V8 versions
- Applications embedding vulnerable V8 engine versions
Discovery Timeline
- 2025-03-05 - CVE-2025-1914 published to NVD
- 2025-04-01 - Last updated in NVD database
Technical Details for CVE-2025-1914
Vulnerability Analysis
This vulnerability is classified as CWE-125 (Out-of-bounds Read), a memory corruption flaw where the V8 JavaScript engine reads data from memory locations outside the intended buffer boundaries. When V8 processes certain JavaScript code patterns within a crafted HTML page, it fails to properly validate memory access boundaries, allowing read operations beyond the allocated buffer.
The network-based attack vector means exploitation requires no authentication and only minimal user interaction—specifically, the victim must navigate to or be redirected to an attacker-controlled webpage. Once the malicious page loads, the JavaScript payload executes automatically within the browser context.
Out-of-bounds read vulnerabilities in JavaScript engines like V8 can have severe consequences. Attackers may leverage such flaws to leak sensitive memory contents, including pointers, stack data, or heap metadata. This information disclosure can defeat security mechanisms like Address Space Layout Randomization (ASLR) and enable more sophisticated attacks such as arbitrary code execution.
Root Cause
The root cause lies in insufficient bounds checking within the V8 JavaScript engine's memory handling routines. When processing specific JavaScript constructs or WebAssembly code, V8 fails to properly validate that memory read operations stay within allocated buffer boundaries. This allows crafted input to trigger reads from adjacent memory regions.
Attack Vector
The attack is delivered through a network-based vector requiring user interaction. An attacker would need to:
- Create a malicious HTML page containing specially crafted JavaScript that triggers the V8 vulnerability
- Lure the victim to visit the malicious page through phishing, malvertising, or compromised legitimate websites
- Upon page load, the malicious JavaScript executes and exploits the out-of-bounds read condition
- Memory contents are read beyond intended boundaries, potentially leaking sensitive information
The vulnerability triggers when V8 processes the malicious JavaScript, causing it to read memory outside the bounds of allocated buffers. This can expose internal V8 data structures, heap metadata, or other sensitive information that attackers can use for further exploitation.
Detection Methods for CVE-2025-1914
Indicators of Compromise
- Unexpected browser crashes or instability when visiting unknown websites
- Unusual memory access patterns or segmentation faults in Chrome crash logs
- Browser processes exhibiting abnormal memory consumption patterns
- Evidence of JavaScript obfuscation techniques in network traffic to suspicious domains
Detection Strategies
- Monitor browser crash reports for V8-related memory access violations
- Implement network security controls to detect and block known malicious domains serving exploit code
- Deploy endpoint detection and response (EDR) solutions capable of identifying JavaScript engine exploitation attempts
- Review web proxy logs for suspicious HTML/JavaScript payloads targeting browser vulnerabilities
Monitoring Recommendations
- Enable Chrome's built-in crash reporting and review crash dumps for V8-related exceptions
- Implement browser isolation technologies for high-risk browsing activities
- Monitor for unusual child processes spawned by browser applications
- Configure SIEM rules to correlate browser crashes with recent browsing activity to suspicious domains
How to Mitigate CVE-2025-1914
Immediate Actions Required
- Update Google Chrome to version 134.0.6998.35 or later immediately
- Enable automatic browser updates to ensure timely patch deployment
- Consider using browser isolation for untrusted web content until patching is complete
- Review and restrict browsing to trusted websites during the vulnerability window
Patch Information
Google has addressed this vulnerability in Chrome version 134.0.6998.35. The fix implements proper bounds checking in the V8 engine to prevent out-of-bounds memory read operations. Organizations should prioritize this update across all managed endpoints.
For detailed patch information, refer to the Google Chrome Release Update. Additional technical details are available in the Chromium Issue Tracker Entry.
Workarounds
- Enable Site Isolation in Chrome to limit the impact of renderer process compromises
- Disable JavaScript execution for untrusted sites using browser extensions or enterprise policies
- Implement network-level filtering to block access to known malicious domains
- Consider using alternative browsers temporarily until Chrome can be updated
# Verify Chrome version and force update check
# Check current Chrome version
google-chrome --version
# Force Chrome update check (restart browser after)
# On Linux systems, update via package manager:
sudo apt update && sudo apt upgrade google-chrome-stable
# On Windows, Chrome updates automatically or via:
# Settings > About Chrome > Check for updates
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
