Google Chrome: Memory corruption in Cache allows code execution in sandbox
Summary
Google Chrome desktop versions before 156.0.8078.73 contain a memory corruption flaw in the Cache component. A remote attacker can potentially execute arbitrary code inside the browser sandbox by luring a user to a crafted HTML page. The CVSS score assumes high impact, but the vendor description limits the flaw to the sandbox, and no sandbox escape is described.
Affected
- Google Chrome desktop prior to 156.0.8078.73
- Windows and macOS: prior to 156.0.8078.73/.74 according to MS-ISAC
- Linux: prior to 156.0.8078.73 according to MS-ISAC
- Chromium-based browsers are not covered by this entry and must be checked against their own advisories
Fixed in
- Google Chrome 156.0.8078.73 (Linux)
- Google Chrome 156.0.8078.73/.74 (Windows and macOS)
- Fixed in the Stable Channel Update for Desktop of 27 October 2026
Workaround
- Unknown beyond updating. No vendor workaround is known.
Exploitation
- No evidence of exploitation in the wild found in the sources.
- Not listed in CISA KEV according to one tracker; the CISA catalogue was not checked directly.
- No public proof of concept found.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
- EPSS: 0.26 % (percentile 18).
Our recommendation
- Update all Chrome desktop installations to the fixed versions this week.
- Enforce automatic updates via policy and verify the Chrome version across all devices.
- Make sure Chrome has been restarted so the new version is active.
- Check other Chromium-based browsers (Edge, Brave, Opera) against their vendors' advisories.
- Monitor vendor and CISA announcements for any change 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
- MS-ISAC advisory for Google Chrome www.cisecurity.org
- Ubuntu CVE tracker ubuntu.com
- OffSeq threat radar radar.offseq.com
- Cobalt issue on Chromium-based forks github.com
- CVE tracker entry on CISA KEV status github.com
- v8go issue on exploitation status 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, 09:44.
Original description (NVD)
Memory corruption in Cache 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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