Google Chrome: Memory corruption in Network component allows sandbox code execution
Summary
Google Chrome versions before 156.0.8078.79 contain a memory corruption flaw (CWE-119) in the Network component. 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 or a compromised website.
Affected
- Google Chrome prior to 156.0.8078.79 (Windows, Mac, Linux)
- Chromium-based browsers that use the affected Chromium code base (not verified)
Fixed in
- Google Chrome 156.0.8078.79 (Linux, Windows, Mac)
- Google Chrome 156.0.8078.80 (Windows, Mac)
Workaround
Unknown. No workaround documented; update Chrome.
Exploitation
- No known exploitation in the wild; not listed in CISA KEV (as of publication).
- No public proof-of-concept exploit found.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
Our recommendation
- Confirm all Chrome installations run version 156.0.8078.79 or later (156.0.8078.80 on Windows and Mac).
- Force a browser restart where updates are pending, as the fix only takes effect after relaunch.
- Roll out the update to managed Windows, Mac and Linux fleets with priority.
- Check other Chromium-based browsers (Edge, Brave, Opera) for their own patched builds.
- Recheck NVD and the Chromium issue tracker in about a week for further details.
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 572055997 issues.chromium.org
- VulDB CVE-2026-76029 vuldb.com
- SecurityOnline: Chrome 156 security update 156.0.8078.79 securityonline.info
- OffSeq Radar: CVE-2026-76029 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, 08:48.
Original description (NVD)
Memory corruption in Network 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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