Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
Use after free in WebRTC in Google Chrome on Windows prior to 148.0.7778.96 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
AnalysisAI
Remote code execution in Google Chrome for Windows below version 148.0.7778.96 allows unauthenticated attackers to execute arbitrary code within Chrome's sandbox via specially crafted HTML pages exploiting a use-after-free vulnerability in the WebRTC implementation. CVSS score of 8.8 reflects high impact across confidentiality, integrity, and availability. EPSS data not provided, but Google's 'High' severity classification and immediate patch release indicate active concern. No CISA KEV listing or public POC identified at time of analysis, though the vulnerability is already patched.
Technical ContextAI
WebRTC (Web Real-Time Communication) is a collection of protocols and APIs enabling peer-to-peer audio, video, and data sharing in web browsers without requiring plugins. This vulnerability stems from a use-after-free condition (CWE-416), a memory corruption bug where code continues to reference memory after it has been freed, leading to undefined behavior. In Chrome's implementation on Windows, the freed memory can be reallocated and controlled by an attacker through crafted HTML/JavaScript, allowing manipulation of execution flow. The CPE cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* identifies all Chrome versions prior to the fix as affected. WebRTC's complexity in managing multimedia streams, peer connections, and data channels creates a large attack surface for memory management errors. Chrome's sandbox architecture limits the initial impact to sandbox escape attempts rather than direct system compromise.
RemediationAI
Immediately upgrade Google Chrome on Windows to version 148.0.7778.96 or later through Chrome's built-in update mechanism (Settings > About Chrome) or by downloading the latest stable release from google.com/chrome. Enterprise deployments should push the update via existing software distribution channels and verify installation across all Windows endpoints. For environments unable to patch immediately, implement compensating controls: restrict web browsing to trusted sites only via proxy filtering or DNS policies (trade-off: significant user productivity impact), disable WebRTC entirely via Chrome policy 'WebRtcUdpPortRange' set to empty string (trade-off: breaks legitimate video conferencing and WebRTC applications like Google Meet, Microsoft Teams web client), or deploy application control solutions to block execution of untrusted HTML content (trade-off: requires tuning to avoid false positives). Official advisory and technical details available at https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html and Chromium issue tracker https://issues.chromium.org/issues/504612429.
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Same weakness CWE-416 – Use After Free
View allSame technique Denial Of Service
View allVendor StatusVendor
SUSE
Severity: HighShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-27959