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cve

CVE-2025-14174: Chrome ANGLE Flaw Under Active Attack

Security Substrate

— 7 min read

CVE-2025-14174: Chrome ANGLE Flaw Under Active Attack

CVE ID: CVE-2025-14174

Severity: HIGH | CVSS: 8.8

Sources: 2 different security sources

Let Me Explain What Happened

Sit down for a moment, because we need to talk about something important happening with Google Chrome on Mac computers. There's a vulnerability—think of it as a weak spot in a fence—that attackers are actively exploiting right now. This isn't a theoretical problem we're worried might happen someday. CISA, the Cybersecurity and Infrastructure Security Agency, has confirmed that bad actors are already using this flaw in targeted attacks. When I see CISA add something to their Known Exploited Vulnerabilities catalog, I know it's time to take immediate action.

Here's what's concerning: this vulnerability lives in something called ANGLE, which is a graphics layer that helps Chrome display web content on your Mac. A cleverly crafted HTML page—just a webpage, nothing you'd need to download or install—can trigger an out-of-bounds memory access. In plain English, that means the attacker can make Chrome read or write data in parts of your computer's memory where it shouldn't be allowed to go. And once they can do that, they can potentially take control of your system.

A Bit More Detail

The vulnerability was disclosed on December 12, 2025, and affects Google Chrome versions on Mac prior to 143.0.7499.110. What makes this particularly dangerous is the attack vector: it's delivered over the network, requires no special privileges, and only needs you to visit a malicious webpage. The attacker doesn't need you to download anything suspicious or enter your password. Just visiting the wrong page at the wrong time could be enough.

According to the National Vulnerability Database, this flaw scores an 8.8 out of 10 on the CVSS scale, which puts it firmly in the "HIGH" severity category. The impact spans confidentiality, integrity, and availability—the three pillars of information security. In practical terms, that means an attacker could potentially read your sensitive data, modify information on your system, or disrupt your computer's normal operation.

The Technical Specifics

  • Attack Vector: NETWORK (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
  • Attack Complexity: Low—attackers don't need special conditions to exploit this
  • Privileges Required: None—no authentication needed
  • User Interaction: Required—victim must visit a malicious page
  • Affected Products: Google Chrome on Mac prior to version 143.0.7499.110
  • Also Affected: Microsoft Edge (shares Chromium codebase)
  • CWE Classification: CWE-787 (Out-of-bounds Write) and CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)
  • ANGLE Component: Graphics rendering layer that translates OpenGL ES API calls
  • Exploitation Status: Confirmed active exploitation by CISA

Understanding the ANGLE Component

Let me take a moment to explain what ANGLE is, because understanding this helps you grasp why this vulnerability matters. ANGLE stands for "Almost Native Graphics Layer Engine," and it's a piece of software that sits between web content and your computer's graphics hardware. When a website wants to display 3D graphics or complex visual effects, it uses WebGL, which in turn relies on ANGLE to translate those instructions into something your Mac's graphics card can understand.

Think of ANGLE as a translator at the United Nations. The website speaks one language (WebGL/OpenGL ES), your graphics card speaks another (Metal, on modern Macs), and ANGLE translates between them. The problem is, this translator has been making a mistake—it's been allowing instructions that access memory locations outside the boundaries of what should be allowed. It's like a translator who accidentally gives someone access to restricted areas of the building because they misunderstood a request.

Why This Matters Right Now

The timeline here is important. Google released a patch on December 10, 2025, in their stable channel update. But here we are in early 2026, and CISA has added this to their Known Exploited Vulnerabilities catalog, which means they've seen evidence of active exploitation. This tells me two things: first, attackers moved quickly to weaponize this vulnerability, and second, not everyone has patched yet.

The fact that this affects Chrome on Mac specifically is worth noting. Mac users sometimes have a false sense of security, thinking they're less likely to be targeted than Windows users. But sophisticated attackers—the kind who exploit zero-days in targeted campaigns—absolutely go after Mac users, especially in corporate environments, media organizations, and among high-value targets.

What You Should Do About This

  • Right Now (Next 15 Minutes):
    • Open Google Chrome on your Mac
    • Click the three-dot menu in the top-right corner
    • Go to "Help" → "About Google Chrome"
    • Chrome will automatically check for updates and install them
    • Verify you're running version 143.0.7499.110 or later
    • Restart Chrome completely (don't just close the window—quit the application)
    • If you use Microsoft Edge, follow the same process: Menu → "Help and feedback" → "About Microsoft Edge"
  • For IT Administrators:
    • Deploy Chrome version 143.0.7499.110 or later across all Mac endpoints immediately
    • Use your endpoint management system (Jamf, Intune, etc.) to force the update
    • Verify deployment completion within 24 hours
    • Consider temporarily blocking access to untrusted websites until patching is complete
    • Review web proxy logs for unusual WebGL or graphics-heavy page requests to unfamiliar domains
  • For Security Teams:
    • Hunt for Chrome crash dumps or unusual renderer process behavior on Mac endpoints
    • Look for Chrome processes consuming excessive memory before crashing
    • Review EDR telemetry for Chrome spawning unexpected child processes
    • Check for websites serving WebGL content to users who don't typically access such sites
    • Monitor for Chrome accessing unusual memory regions (if your EDR provides this visibility)
  • For the Long Term:
    • Enable automatic updates for Chrome (it's on by default, but verify it hasn't been disabled)
    • Consider implementing browser isolation technology for high-risk users
    • Train users to be suspicious of unexpected prompts to visit websites, even from known contacts
    • Implement defense-in-depth: keep macOS itself updated, as OS-level protections can mitigate browser exploits

Detection Guidance

If you're a security analyst trying to determine whether this vulnerability has been exploited in your environment, here's what to look for. Keep in mind that sophisticated attackers often clean up after themselves, so absence of these indicators doesn't guarantee you're safe—but their presence definitely warrants investigation.

Log Analysis:


# Check Chrome crash logs on macOS
~/Library/Application Support/Google/Chrome/Crash Reports/

# Look for crashes in the GPU process or renderer process
# Specifically around the timeframe of December 2025 - February 2026

# Check system logs for Chrome crashes
log show --predicate 'process == "Google Chrome"' --info --last 30d | grep -i "crash\|fault\|exception"

Memory Forensics Indicators:

  • Chrome renderer processes with unusual memory allocation patterns
  • Heap spray attempts (large allocations of repetitive data)
  • ROP chains or shellcode in Chrome process memory
  • Unexpected executable memory regions in Chrome's address space

Going Deeper: The MITRE ATT&CK Perspective

For those of you who map threats to the MITRE ATT&CK framework, this vulnerability aligns with several techniques. The initial exploitation falls under T1203: Exploitation for Client Execution. The attacker leverages a vulnerability in Chrome to execute arbitrary code on the victim's system. The delivery mechanism—a malicious webpage—corresponds to T1189: Drive-by Compromise.

Once code execution is achieved through this vulnerability, attackers typically pivot to T1055: Process Injection to move from the Chrome sandbox into other processes, or T1068: Exploitation for Privilege Escalation if they chain this with additional vulnerabilities. Given that CISA has flagged this for active exploitation in targeted attacks, we should assume sophisticated actors are using this as an initial access vector in multi-stage campaigns.

The fact that this affects ANGLE specifically is interesting from a defensive perspective. ANGLE vulnerabilities have been exploited before, and they're attractive to attackers because they sit at the intersection of web content and native code execution. The graphics rendering pipeline is complex, handles untrusted input (WebGL shaders, textures, geometry data), and has direct access to system resources. It's a rich attack surface.

The Broader Context

This vulnerability doesn't exist in isolation. According to Cyble's vulnerability intelligence tracking, they monitored over 1,000 vulnerabilities in late January 2026 alone, with nearly 200 having publicly available proof-of-concept exploits. The vulnerability landscape is intense right now, and attackers are moving faster than ever from disclosure to exploitation.

What concerns me most about CVE-2025-14174 is the combination of factors: high severity, low attack complexity, active exploitation, and the fact that it affects a widely-used browser on a platform that users sometimes neglect to update promptly. Mac users, in my experience, are often excellent about updating macOS itself but sometimes forget about their applications.

A Word About Browser Security

Let me share something I've learned over decades in this field: your browser is one of the most important security boundaries on your computer. It's the gateway between the wild, untrusted internet and your personal data, your corporate network, your sensitive files. Every day, your browser makes thousands of decisions about what code to run, what data to access, and what resources to allow.

Modern browsers like Chrome have sophisticated security architectures—sandboxing, site isolation, memory safety features—but they're also incredibly complex pieces of software. Chrome contains millions of lines of code, and ANGLE alone is a substantial project. With that complexity comes vulnerability. It's not a matter of if flaws will be found, but when, and how quickly we respond.

That's why I'm always encouraging people to keep their browsers updated. Not next week, not when it's convenient—now. Enable automatic updates. Restart your browser when it prompts you. Yes, I know you have 47 tabs open and you'll lose your place. Bookmark them, use a session manager, or use Chrome's built-in tab groups and sync. Your security is worth the minor inconvenience.

Final Thoughts

If you take nothing else from this article, take this: update Chrome on your Mac right now. Don't wait until tomorrow, don't wait until you finish that project. Open Chrome, check for updates, install them, and restart. If you're responsible for other people's computers—if you're an IT administrator, a security professional, or just the family tech support person—make sure their browsers are updated too.

This vulnerability is being actively exploited. That means real attackers are using it against real targets right now. The patch is available and easy to apply. There's no reason to remain vulnerable.

Stay safe out there, and remember: security is a journey, not a destination. We're all learning together, one vulnerability at a time.

Where I Found This Information

Note: This is automated security intelligence based on multiple sources. Always test updates carefully before applying them everywhere, especially in production environments. The information provided here is current as of the publication date, but the threat landscape evolves rapidly. Verify patch compatibility with your specific environment before deployment.

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