Google Chrome: Memory corruption in PlatformIntegration allows sandbox code execution
Summary
Google Chrome versions prior to 156.0.8078.47 contain a memory corruption flaw in the PlatformIntegration component. A remote attacker can use a crafted HTML page to execute arbitrary code inside the browser sandbox. The attack requires that a user opens the malicious page, for example while browsing the internet.
Affected
- Google Chrome prior to 156.0.8078.47 (desktop)
- Other Chromium-based browsers may be affected until they ship the fix; status for Microsoft Edge and Ubuntu's Chromium snap must be checked separately
Fixed in
- Google Chrome 156.0.8078.47 or later (Chrome 156 Stable channel, advisory dated 20 October 2026)
- Newest Chrome 156 stable build recommended; secondary sources list later builds (for example 156.0.8078.79/.80), not verified on Google's page
Workaround
- No workaround documented. Update Chrome.
- Unknown whether browser policies or feature flags reduce exposure.
Exploitation
- No in-the-wild exploitation found in the reviewed sources. CISA KEV was not checked directly.
- No public proof of concept found.
- CISA SSVC: exploitation none, not automatable, total technical impact.
Our recommendation
- Update Chrome to the newest Chrome 156 stable build on all endpoints.
- Restart browsers after the update so the new version takes effect.
- Check that auto-update is enabled and that managed devices are not pinned to older builds.
- Inventory other Chromium browsers (Edge, Brave and similar) and update them.
- Recheck CISA KEV and the vendor pages for changes in exploitation status.
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 Security Update Guide msrc.microsoft.com
- Ubuntu CVE tracker ubuntu.com
- NVD record via Vulners vulners.com
- TechSpot Google Chrome download page www.techspot.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, 13:43.
Original description (NVD)
Memory corruption in PlatformIntegration in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to 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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