Google Chrome: Use-after-free in Browser allows remote code execution
Summary
Google Chrome desktop contains a use-after-free flaw in the Browser component. A remote attacker can execute arbitrary code outside the browser sandbox by luring a user to a crafted HTML page. No privileges are needed, but the user must visit the page. The CVSS base score is 9.6 (critical).
Affected
- Google Chrome desktop versions prior to 155.0.8059.39 (Windows, Mac, Linux)
Fixed in
- Chrome 155.0.8059.39 for Linux and 155.0.8059.39/.40 for Windows and Mac (Stable channel update, 6 Oct 2026)
- Debian bookworm: chromium 155.0.8059.39-1~deb12u1
- Ubuntu: chromium-browser deb packages not affected, because Ubuntu installs Chromium as a snap; check the snap refresh status
Workaround
Unknown. No vendor workaround is published. Apply the browser update.
Exploitation
- Google reports no known exploitation in the wild.
- CISA SSVC assessment: exploitation none, not automatable, total technical impact.
- No public proof-of-concept found.
Our recommendation
- Update Google Chrome to the current stable release on all desktops without delay.
- Keep automatic updates enabled and enforce updates in managed environments.
- Check Linux and snap-based Chromium installations separately.
- Make sure other Chromium-based browsers are updated as well.
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
- Debian security tracker (OSV) osv.dev
- Ubuntu CVE record ubuntu.com
- Malwarebytes: Update Chrome and ChromeOS to fix critical security issues www.malwarebytes.com
- SecurityWeek: Chrome 155 update patches 247 vulnerabilities www.securityweek.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 30 Oct 2026, 23:22.
Original description (NVD)
Use after free in Browser in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)
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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