Google Chrome: Memory corruption in FileSystem allows code execution
Summary
Google Chrome desktop prior to 156.0.8078.73 contains a memory corruption flaw in the FileSystem component (CWE-119). A remote attacker can use a crafted HTML page to potentially execute arbitrary code outside the browser sandbox. The victim only needs to open the malicious page; no authentication is required.
Affected
- Google Chrome desktop prior to 156.0.8078.73
- Chromium-based products that include the affected code (status not verified)
Fixed in
- Google Chrome 156.0.8078.73 or later (Windows, Mac and Linux, per the vendor advisory of 27 Oct 2026; verify build numbers against the advisory)
- Android: 156.0.8078.73 via Google Play
- ChromeOS: fixed build not yet confirmed at last check
Workaround
Unknown.
- No vendor workaround is known. Applying the update is the remedy.
Exploitation
- No in-the-wild exploitation reported at time of research.
- No public proof-of-concept found.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
- Not listed in CISA KEV at last check (verify).
Our recommendation
- Treat as high priority for all workstations with Chrome.
- Push Chrome 156.0.8078.73 or later to all browsers and force a restart.
- Check ChromeOS and Android devices and re-check once Google publishes the ChromeOS update.
- Monitor the CISA KEV catalogue for changes.
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 bug tracker issues.chromium.org
- Ubuntu security tracker ubuntu.com
- Tenable plugin listing www.tenable.com
- Betanews betanews.com
- Chromegeek www.chromegeek.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, 22:02.
Original description (NVD)
Memory corruption in FileSystem in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to potentially 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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