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
Out of bounds write in WebRTC in Google Chrome 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: Medium)
AnalysisAI
Remote code execution within Chrome's sandbox affects all versions prior to 148.0.7778.96 through an out-of-bounds write in the WebRTC component. Attackers can achieve arbitrary code execution by convincing users to visit a specially crafted HTML page, though execution remains confined to Chrome's sandbox. EPSS data not available for this recent CVE (May 2026). Vendor-released patch version 148.0.7778.96 addresses the vulnerability with Chromium security severity rated Medium despite 8.8 CVSS score.
Technical ContextAI
This vulnerability exploits CWE-787 (Out-of-bounds Write) in Chrome's WebRTC implementation, the real-time communication framework enabling peer-to-peer audio, video, and data sharing in browsers. The affected component is cpe:2.3:a:google:chrome prior to version 148.0.7778.96. Out-of-bounds write vulnerabilities occur when software writes data beyond allocated memory boundaries, allowing attackers to overwrite adjacent memory regions with attacker-controlled data. In WebRTC's case, this likely involves malformed Session Description Protocol (SDP) messages, RTP packets, or ICE candidate handling that triggers memory corruption during media stream processing. The sandbox constraint means exploitation provides code execution within Chrome's restricted process environment rather than system-level compromise.
RemediationAI
Update Google Chrome to version 148.0.7778.96 or later via automatic updates or manual download from google.com/chrome. Chrome typically auto-updates within 24-48 hours of release; users can force immediate update by navigating to chrome://settings/help. Enterprise deployments should deploy version 148.0.7778.96 through managed update channels per the stable channel advisory at chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html. If immediate patching is infeasible, restrict user access to untrusted websites and disable WebRTC via chrome://flags/#disable-webrtc (note: this breaks legitimate conferencing tools like Google Meet, Zoom web client, and WebRTC-based applications, making it impractical for most users). Network-level blocking of WebRTC STUN/TURN traffic (UDP ports 3478, 5349, TCP 443 for TURN-over-TLS) can limit exploitation surface but breaks WebRTC functionality entirely and may not prevent HTML-based trigger mechanisms.
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Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Memory Corruption
View allVendor StatusVendor
SUSE
Severity: HighShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-28005