Google Chrome V8: Type confusion allows code execution in sandbox
Summary
Google Chrome before 155.0.8059.39 contains a type confusion flaw in the V8 JavaScript engine. A remote attacker can use a crafted HTML page to potentially execute arbitrary code inside the browser sandbox. Exploitation requires that a user opens the malicious page. Google rates the Chromium security severity as Medium, and CISA SSVC lists no exploitation.
Affected
- Google Chrome prior to 155.0.8059.39 (per CVE description)
- Microsoft Edge (Chromium-based), per HKCERT bulletin: versions prior to 155.0.4283.62
Fixed in
- Google Chrome 155.0.8059.39/.40 for Windows and macOS
- Google Chrome 155.0.8059.39 for Linux
- Microsoft Edge 155.0.4283.62 or later (per HKCERT, MSRC not verified)
Workaround
- No workaround is needed where the security update is applied.
- Extended Stable channel users receive security fixes, though feature updates are less frequent.
Exploitation
- Not known to be exploited in the wild (CISA ADP Vulnrichment; not listed in CISA KEV).
- No public proof of concept found.
Our recommendation
- Update Chrome and Edge on all endpoints to the fixed versions or later.
- Verify that auto-update works on managed devices and that the fixed build is running.
- Confirm Linux distribution packages against your release's security tracker.
- Monitor for unusual browser crashes or behavior after the update rollout.
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
- HKCERT security bulletin: Microsoft Edge multiple vulnerabilities www.hkcert.org
- SUSE CVE via Vulners vulners.com
- CISA ADP Vulnrichment via HOL hol.org
- Strix CVE summary www.strix.ai
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, 21:53.
Original description (NVD)
Type confusion in V8 in Google Chrome prior to 155.0.8059.39 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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