Google Chrome: Use-after-free in WebRTC allows code execution in sandbox
Summary
A use-after-free flaw in the WebRTC component of Google Chrome allows a remote attacker to execute arbitrary code inside the browser sandbox. The attacker needs a user to visit a crafted HTML page. Google rates the issue as High severity, and the NVD base score is 8.8.
Affected
- Google Chrome prior to 155.0.8059.39
- Chromium-based browsers that include the affected Chromium code until they are updated
Fixed in
- Google Chrome 155.0.8059.39 (Windows, Mac and Linux, Stable Channel Update of 6 October 2026)
- Later stable Chrome builds also include the fix
Workaround
Unknown. Updating to a fixed version is the recommended remedy.
Exploitation
- No evidence of exploitation in the wild found at the time of writing
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Google has not stated whether the bug is exploited
- No public proof of concept known
Our recommendation
- Update Chrome to the latest stable build on all workstations, including Chromium-based browsers such as Microsoft Edge
- Verify via MDM or group policy that the fleet is at or above the fixed version and that auto-update is not blocked
- Check Linux hosts for distribution updates of the Chromium package
- Investigate unexpected browser crashes or sandbox alerts on patched machines
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 entry issues.chromium.org
- OpenCVE record CVE-2026-106357 app.opencve.io
- CISA SSVC via Hol.org (ADP Vulnrichment) hol.org
- Microsoft Edge multiple vulnerabilities, HKCERT www.hkcert.org
- MS-ISAC advisory 2026-109 (Google Chrome) www.cisecurity.org
- SUSE CVE record via Vulners vulners.com
- OffSeq threat radar: Chromium security update radar.offseq.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, 21:48.
Original description (NVD)
Use after free in WebRTC 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: 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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