CVE Alert: CVE-2025-6558 – Google – Chrome
CVE-2025-6558
Insufficient validation of untrusted input in ANGLE and GPU in Google Chrome prior to 138.0.7204.157 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
AI Summary Analysis
Risk verdict
Treat as priority 1: KEV-listed and SSVC-exploitation-active vulnerability, requiring urgent patching.
Why this matters
An attacker could escape the Chrome sandbox via a crafted HTML page, potentially gaining remote code execution with full system visibility. Because exploitation requires user interaction but uses a network attack vector, targeted users could be lured via malicious sites or adverts, risking data exfiltration, credential compromise, and disruption across endpoints.
Most likely attack path
An attacker hosts a crafted HTML page; a user visits it, triggering ANGLE/GPU processing and a sandbox escape. No local privileges are required beyond user interaction, but post-exploitation yields high impact within the host browser context and could enable further OS-level access if combined with other footholds.
Who is most exposed
Desktop Chrome users across Windows, macOS and Linux, including enterprise endpoints and remote workers, are most at risk due to broad deployment and exposure to web content.
Detection ideas
- Look for ANGLE/GPU crash patterns or sandbox-escape indicators in browser and OS crash dumps.
- Unusual GPU process activity or spikes during page load of untrusted content.
- EDR alerts or IOC hits tied to this CVE or related exploitation attempts.
- Anomalous network activity to or from web services hosting crafted HTML pages.
- Elevated user prompts or unusual browser stabilisation events following webpage loads.
Mitigation and prioritisation
- Patch Chrome to the latest stable release (minimum 138.0.7204.157 or newer); ensure automatic updates are enabled. Treat as priority 1.
- If patching is slow, implement compensating controls: block or sandbox untrusted HTML content from external sites; enable browser isolation where feasible; disable or constrain GPU/ANGLE features in high-risk groups.
- Apply change management: test compatibility in staging, deploy organization-wide, and monitor for exploitation attempts and related crashes.
- Enhance detection: maintain KEV- and CERT-aligned telemetry; require rapid exploitation indicator review during updates.
A considerable amount of time and effort goes into maintaining this website, creating backend automation and creating new features and content for you to make actionable intelligence decisions. Everyone that supports the site helps enable new functionality.
If you like the site, please support us on “Patreon” or “Buy Me A Coffee” using the buttons below
To keep up to date follow us on the below channels.
