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CVE-2026-9893 Google CVE debrief

A critical use-after-free vulnerability in Skia, the 2D graphics library used by Google Chrome, enables sandbox escape from a compromised renderer process. The flaw affects Chrome versions prior to 148.0.7778.216. A remote attacker who has already achieved renderer compromise can leverage this vulnerability to escape the Chrome sandbox via a crafted HTML page. The vulnerability was assigned CWE-416 (Use After Free) and carries Chromium's highest severity rating of Critical. The issue was resolved in the stable channel update released May 2026.

Vendor
Google
Product
Chrome
CVSS
HIGH 8.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-28
Original CVE updated
2026-05-29
Advisory published
2026-05-28
Advisory updated
2026-05-29

Who should care

Enterprise security teams managing Chrome deployments, endpoint protection administrators, organizations with bring-your-own-device policies, and security-conscious users relying on Chrome's sandbox for web isolation. Critical for environments where browser compromise could lead to broader network intrusion.

Technical summary

The vulnerability resides in Skia, Chrome's 2D graphics rendering engine. A use-after-free condition allows memory corruption that can be exploited to break out of the Chrome sandbox when triggered from an already-compromised renderer process. This represents a second-stage exploit primitive that elevates attacker privileges from renderer isolation to full system access. The attack vector requires crafted HTML content and prerequisite renderer compromise, indicating this vulnerability is typically chained with other exploits rather than used for initial access.

Defensive priority

critical

Recommended defensive actions

  • Upgrade Google Chrome to version 148.0.7778.216 or later immediately
  • Prioritize patching on endpoints with high-risk user profiles (developers, executives, IT administrators)
  • Enable automatic Chrome updates to ensure rapid deployment of security fixes
  • Monitor for indicators of renderer compromise as potential precursor activity
  • Review browser isolation policies and consider additional sandboxing controls for untrusted web content
  • Audit Chrome installations across enterprise environments to identify outdated versions

Evidence notes

Vulnerability description and affected version confirmed via NVD record and Chrome Release Blog reference. CWE-416 classification sourced from NVD weakness data. Chromium security severity rating of Critical explicitly stated in official description.

Official resources

2026-05-28