Google Chrome: Use-after-free in Chromecast component
Summary
A use-after-free vulnerability (CWE-416) in the Chromecast component of Google Chrome allows a remote attacker to potentially execute arbitrary code inside the sandbox. Exploitation requires the victim to visit a crafted HTML page, for example a malicious or compromised website or advertisement. Google has fixed the issue in the Chrome 156 stable releases listed below; the NVD CVSS score is 8.8.
Affected
- Google Chrome desktop stable builds before 156.0.8078.47 on Linux
- Google Chrome desktop stable builds before 156.0.8078.47 or 156.0.8078.48 on Windows and macOS
- Google Chrome for Android builds before 156.0.8078.47
Fixed in
- Google Chrome 156.0.8078.47 for Linux and Android
- Google Chrome 156.0.8078.47 or 156.0.8078.48 for Windows and macOS
Workaround
Unknown. No vendor-documented workaround exists. Applying the update is the remedy.
Exploitation
- No known exploitation according to the sources reviewed.
- No public proof of concept found.
- CISA KEV status not verified.
Our recommendation
- Update Google Chrome to the fixed versions on all desktop and Android devices and verify the version.
- Restart the browser so the update takes effect.
- Check Linux systems using Chromium packages or snaps separately.
- Monitor for unusual browser crashes or code execution alerts.
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
- Microsoft MSRC update guide msrc.microsoft.com
- VulDB entry vuldb.com
- TechGeeks security notice Chrome 156 www.techgeeks.org
- Cybersecuritynews: Chrome security update cybersecuritynews.com
- Penligent: Chrome 156 security update www.penligent.ai
- Ubuntu CVE tracker ubuntu.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, 12:43.
Original description (NVD)
Use after free in Chromecast in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
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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