Google Chrome: Use after free in Browser allows code execution outside sandbox
Summary
A use-after-free flaw in the Browser component of Google Chrome before 155.0.8059.79 allows a remote attacker to execute arbitrary code outside the browser sandbox. Exploitation requires that a user visits a crafted HTML page, for example via a malicious or compromised website or link. Chromium rates the issue Critical, and NVD scores it 9.6 (CVSS 3.1).
Affected
- Google Chrome prior to 155.0.8059.79 (desktop and Android)
- Debian packages prior to 155.0.8059.79-1~deb12u1
- Ubuntu chromium-browser deb package: listed as not affected (Snap channel and version must be checked separately)
Fixed in
- Chrome 155.0.8059.79 for Windows, Mac and Linux (Stable channel, 13 Oct 2026); 155.0.8059.80 for Windows and Mac is also listed
- Chrome 155.0.8059.79 for Android (same day)
- Debian: 155.0.8059.79-1~deb12u1
Workaround
No workaround documented. Apply the update and restart the browser.
Exploitation
- No evidence of in-the-wild exploitation found.
- No public proof-of-concept found.
- Not listed in CISA KEV according to a third-party tracker; the CISA KEV catalog was not checked directly.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
Our recommendation
- Update all desktop and Android Chrome installations to 155.0.8059.79 or later with high priority, especially on workstations with administrator rights or access to sensitive data.
- Check the version across the fleet via the management console or MDM and verify that auto-update works.
- Restart browsers after the update, since the update takes effect only after a restart.
- Push the update manually where the rollout lags.
- Check Snap-based Chromium installations on Ubuntu separately.
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 entry issues.chromium.org
- Debian OSV record osv.dev
- Ubuntu security tracker ubuntu.com
- Malwarebytes: Chrome update fixes 37 security flaws www.malwarebytes.com
- VulDB entry vuldb.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, 22:53.
Original description (NVD)
Use after free in Browser in Google Chrome prior to 155.0.8059.79 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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