Google Chrome: Memory corruption in FileSystem allows sandboxed code execution
Summary
Google Chrome versions before 156.0.8078.79 contain a memory corruption flaw in the FileSystem component (CWE-119). A remote attacker can use a crafted HTML page to potentially execute arbitrary code inside the browser sandbox. The attack requires that a user opens the malicious page, for example via a phishing link.
Affected
- Google Chrome before 156.0.8078.79 (Desktop, all platforms)
- Chromium-based browsers that include the vulnerable code until they ship their own fix (vendor-dependent)
Fixed in
- Google Chrome 156.0.8078.79 or later (Windows, Mac and Linux, per Chrome Releases)
Workaround
- None documented. Chrome vendor advisory indicates no mitigation beyond updating.
Exploitation
- No evidence of in-the-wild exploitation found.
- Not listed in CISA KEV at the time of research.
- No public proof-of-concept indexed in Metasploit or Exploit-DB as of 29 Oct 2026.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
Our recommendation
- Confirm the Chrome version on all endpoints and update to 156.0.8078.79 or later.
- Enable automatic updates and, if available, use Chrome Enterprise policies to enforce a minimum version.
- Verify that other Chromium-based browsers in use (e.g. Edge, Opera, Brave) have received their own updates.
- Prioritise user devices with Chrome, as browsers are a common entry point for drive-by attacks.
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
- VulDB entry vuldb.com
- OffSeq Radar: CVE-2026-76030 radar.offseq.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 31 Oct 2026, 08:50.
Original description (NVD)
Memory corruption in FileSystem in Google Chrome prior to 156.0.8078.79 allowed a remote attacker to potentially execute arbitrary code inside 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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