Google Chrome: Use after free in Metrics allows sandbox escape
Summary
Google Chrome before 155.0.8059.39 contains a use-after-free vulnerability in the Metrics component. A remote attacker who has already compromised the renderer process can execute arbitrary code outside the browser sandbox by luring a user to a crafted HTML page. Exploitation requires a chained attack and user interaction, and the CVSS score is 8.3 (High).
Affected
- Google Chrome prior to 155.0.8059.39
- Chromium-based browsers that have not yet integrated the fix (e.g. Microsoft Edge: fixed build not verified)
Fixed in
- Google Chrome 155.0.8059.39 or later (Windows and Mac builds may be 155.0.8059.40)
- Debian bookworm chromium: 155.0.8059.39-1~deb12u1
Workaround
- No workaround is documented. Updating Chrome is the required mitigation.
Exploitation
- Not listed in CISA KEV.
- CISA SSVC: exploitation none, automatable no, technical impact total.
- No public proof of concept found; no evidence of exploitation in the wild in the vendor advisory.
- EPSS: 0.00371.
Our recommendation
- Update Google Chrome to 155.0.8059.39 or later (or 155.0.8059.40 on Windows and Mac) across all endpoints.
- Use managed Chrome and Edge update policies and verify the installed version on each device.
- Check whether Chromium-based browsers such as Microsoft Edge have received a fixed build.
- Treat as a standard high-severity browser patch unless signs of targeted attacks appear.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Chrome Releases: Stable Channel Update for Desktop chromereleases.googleblog.com
- Chromium issue tracker issues.chromium.org
- OSV: DEBIAN-CVE-2026-106233 osv.dev
- OpenCVE: CVE-2026-106233 app.opencve.io
- Vulners Chainguard: CVE-2026-106233 vulners.com
- Malwarebytes: Update Chrome and ChromeOS to fix critical security issues www.malwarebytes.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 14:10.
Original description (NVD)
Use after free in Metrics in Google Chrome prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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