Google Chrome: Race condition in V8 allows code execution in sandbox
Summary
A race condition in the V8 JavaScript engine of Google Chrome allows a remote attacker to execute code inside the browser sandbox. Affected are Chrome versions before 155.0.8059.39 on Linux and before 155.0.8059.39/.40 on Windows and macOS. The attacker only needs to lure a user to a crafted HTML page, and no authentication is required. NVD rates the issue CVSS 8.8 (High), while Chromium rates it Medium; the impact is limited to the sandbox unless it is chained with a second flaw.
Affected
- Google Chrome before 155.0.8059.39 (Linux)
- Google Chrome before 155.0.8059.39/.40 (Windows, macOS)
- Chromium-based browsers that share the V8 code, such as Microsoft Edge (Tenable lists patched Edge build 155.0.4283.62)
Fixed in
- Linux: 155.0.8059.39 or later
- Windows and macOS: 155.0.8059.39/.40 or later
- Debian bookworm: 155.0.8059.39-1~deb12u1
- Ubuntu: chromium-browser is not affected because it installs the Chromium snap
Workaround
- No vendor-documented workaround. No workaround is required once the patched version is installed.
- Until updated: avoid visiting untrusted sites in affected browsers. This is an inference, not a vendor recommendation.
Exploitation
- Not known to be exploited in the wild.
- Not listed in CISA KEV according to a third-party alert.
- No public proof of concept found.
- EPSS 0.00337, which indicates low predicted exploitation.
Our recommendation
- Update all Chrome and Edge installations to the fixed versions listed above, starting with workstations that browse the web.
- Check that Debian and SUSE systems with chromium packages are patched.
- Verify browser versions through your management tool or an inventory check.
- Check the Chrome Releases blog for newer stable builds.
- Monitor for public exploit reports and a CISA KEV listing.
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 554619028 issues.chromium.org
- NVD record via OpenCVE app.opencve.io
- HKCERT security bulletin www.hkcert.org
- OSV/Debian osv.dev
- Ubuntu security notice ubuntu.com
- CISA ADP Vulnrichment via HOL hol.org
- Tenable plugin 366658 www.tenable.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, 22:10.
Original description (NVD)
Race condition in V8 in Google Chrome prior to 155.0.8059.39 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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