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 only needs to lure a user to a crafted HTML page, and the user must visit it. The description does not report a sandbox escape, so full system compromise would require a further exploit chain.
Affected
- Google Chrome prior to 155.0.8059.39 (Linux)
- Google Chrome prior to 155.0.8059.39/.40 (Windows and macOS)
- Chromium-based browsers and Linux distribution packages built from affected Chromium versions: unknown, check vendor pages
- Conflicting data: Malwarebytes lists the Windows/macOS build as 154.0.8037.39/.40; Google's advisory is treated as authoritative.
Fixed in
- Google Chrome 155.0.8059.39 (Linux)
- Google Chrome 155.0.8059.39/.40 (Windows and macOS)
- Debian bookworm: 155.0.8059.39-1~deb12u1
- Chainguard Wolfi: 155.0.8059.39-r0
- Fixed versions for Chrome ESR or extended stable branches: unknown
Workaround
No workaround documented. Apply the vendor update.
Exploitation
- No known exploitation in the wild found in the sources checked.
- CISA SSVC: exploitation none, not automatable.
- No public proof of concept found; VulDB states that technical details are unknown.
Our recommendation
- Update Chrome to 155.0.8059.39 or later (155.0.8059.39/.40 on Windows and macOS) on all workstations and servers with browsers.
- Check for stragglers, especially Linux hosts with older Chromium packages and browsers not restarted since the update.
- For managed fleets, enforce update rollout and verify the installed version.
- Patch the whole release, since it fixes several other Chrome use-after-free bugs.
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
- OSV: DEBIAN-CVE-2026-106268 osv.dev
- CIS Advisory: Multiple vulnerabilities in Google Chrome www.cisecurity.org
- VulDB entry 414667 vuldb.com
- OpenCVE: CVE-2026-106268 app.opencve.io
- Chainguard Wolfi package advisory vulners.com
- Chrome 155 security fixes (gHacks) www.ghacks.net
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, 22:02.
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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