On August 13, 2025, Google released a security update for Chrome (versions 139.0.7258.127/.128 on Windows & Mac, 139.0.7258.127 on Linux) patching six vulnerabilities, three of them high severity. These flaws span critical components like the V8 JavaScript engine, libaom video library, and the ANGLE graphics engine.
Here are some of the key issues:
Heap buffer overflow in libaom (CVE-2025-8879), which could allow data writes beyond memory bounds.
A race condition in V8 (CVE-2025-8880), reported by an external researcher, meaning an attacker could exploit the timing of parallel operations.
An out of bounds write in ANGLE (CVE-2025-8901) that could be used to break memory safety protections.
Medium severity issues, including a use after free bug in Aura and problems in the File Picker component, were also addressed.
Many organizations rely on standard detection and response tools: antivirus, EDR (Endpoint Detection and Response), log monitoring, and so on. These are crucial, but this Chrome release shows their limitations:
By the time detection tools raise an alert, critical damage can already be done, such as arbitrary code execution.
Many attackers exploit zero day or soon patched vulnerabilities through mechanisms that evade or outpace detection capabilities.
The sandboxing or privilege separation in browsers or operating systems may be bypassed by out of bounds writes, buffer overflows, or race conditions.
What is needed is a stronger defense posture that stops an attack in its tracks, even if the exploit is unknown or the vulnerability is unpatched. That is where isolation and containment come in.
Isolation and containment mean running risky or untrusted processes in ways that prevent them from impacting the rest of the system, even if they succeed. Some of the benefits:
Even if malicious code is executed via an exploit, its ability to move laterally (for example write files or exfiltrate data) is severely limited.
Attack surfaces are reduced, such as limiting what graphics or rendering components can affect the system, or restricting privileges of browser processes.
Zero trust mindset: assume that some threats will arrive and focus on limiting the blast radius.
That is why we believe AppGuard is an essential tool for any business serious about endpoint security. AppGuard has a 10 year track record of successfully enforcing isolation and containment on endpoints, preventing exploits even when vulnerabilities exist or when detection fails.
Some of the strengths of AppGuard:
Application isolation: it confines applications so that if an exploit manages to run code, it is trapped.
Privilege restriction: limits what compromised apps can do.
Prevention, not just detection: stops many attacks before they ever show signs that detection tools can catch.
AppGuard moves the paradigm from “detect after compromise or suspicious behavior” to “prevent compromise in the first place, and isolate it if it happens.”
Patch quickly, but know that patches are not instant
Even though Google has released fixes, it takes time for updates to reach all systems and for users to restart browsers. Meanwhile, unpatched machines are exposed.
Assume zero day or unpatched vulnerabilities will be exploited
Many threat actors test known high severity CVEs. Some exploit chains combine multiple flaws such as race condition plus out of bounds write. Business owners must design for that possibility.
Layer security: detection, response, and isolation/containment
Detection provides visibility, response provides remediation, and isolation/containment reduces risk and exposure while response kicks in.
If you are a business owner, CIO, CISO, or in charge of cybersecurity for your organization, here is what you should do now:
Talk with us at CHIPS. Let us assess how AppGuard could integrate into your existing security architecture to ensure isolation and containment are in place, not just detection and response.
Evaluate AppGuard’s deployment. Pilot it on critical endpoints to see how it catches attacks that detection tools might miss.
Plan your shift from Detect and Respond to Isolate and Contain. The cost of compromise is higher than ever, especially with vulnerabilities like those just patched in Chrome.
AppGuard is proven, practical, and now commercially available to protect your endpoints. Do not wait until the next high severity vulnerability lets attackers execute arbitrary code on your systems. Contact CHIPS today and let us help you make sure your security does not just catch threats, it stops them.
Like this article? Please share it with others!