Google Chrome V8: Memory corruption allows code execution in sandbox
Summary
A memory corruption flaw in the V8 JavaScript engine of Google Chrome before 156.0.8078.73 can be triggered by a crafted HTML page. A remote attacker may potentially execute arbitrary code inside the browser sandbox. Exploitation requires that a user loads the malicious page, for example through a link or phishing. NVD rates it CVSS 8.8, and no in-the-wild exploitation is known as of the latest data.
Affected
- Google Chrome prior to 156.0.8078.73
- Chromium-based browsers that use the affected V8 version may also be affected (vendor status unknown)
Fixed in
- Google Chrome 156.0.8078.73 or later (Linux)
- Google Chrome 156.0.8078.73 or .74 (Windows, macOS), per release reports; exact build not confirmed in the vendor text
Workaround
- Unknown. No vendor workaround found; apply the update.
Exploitation
- No evidence of in-the-wild exploitation found in the research sources.
- Not listed in CISA KEV in the data reviewed (not checked directly).
- No public proof-of-concept found.
- EPSS about 0.28 percent.
Our recommendation
- Treat as high priority and update Chrome to 156.0.8078.73 or later on all managed endpoints.
- Restart the browser after the update so the new version is active.
- Check that other Chromium-based browsers (for example Edge, Brave) and Linux systems with Chrome are updated.
- Monitor the CISA KEV catalogue and vendor status 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 issue tracker issues.chromium.org
- VulDB entry CVE-2026-118359 vuldb.com
- VulDB vulnerability 427642 vuldb.com
- OffSeq threat radar entry radar.offseq.com
- Malware.news: Chrome and Firefox updates malware.news
- Ubuntu Updates: google-chrome-stable www.ubuntuupdates.org
- GitHub: astruzocyber CVE tracker github.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, 09:42.
Original description (NVD)
Memory corruption in V8 in Google Chrome prior to 156.0.8078.73 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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