Severity by source
AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionCVE.org
Use after free in WebMIDI in Google Chrome on Android prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
AnalysisAI
Sandbox escape in Google Chrome on Android prior to 148.0.7778.216 allows a remote attacker who has already compromised the renderer process to break out of the sandbox via a crafted HTML page that triggers a use-after-free in the WebMIDI component. Chromium rates the severity High, and a vendor patch is available; no public exploit is identified at time of analysis and EPSS is very low at 0.03%.
Technical ContextAI
WebMIDI is the Chromium implementation of the W3C Web MIDI API, which lets web pages enumerate and send/receive messages from MIDI hardware via the browser process and the GPU/utility processes. The bug is CWE-416 (Use After Free): an object in the WebMIDI subsystem is freed while a dangling reference is still reachable, and subsequent reuse of that memory lets attacker-controlled data be treated as a valid object. Because WebMIDI message handling traverses the renderer-to-browser IPC boundary, corrupting state on the privileged side is what makes a sandbox escape (CVSS S:C, scope change) possible from an already-compromised renderer. The affected CPE is cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* and the description explicitly scopes impact to the Android build of Chrome.
RemediationAI
Vendor-released patch: Chrome for Android 148.0.7778.216 - update via Google Play or the Chrome Stable channel as described in the Chrome Releases advisory at https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html. In managed Android fleets, push the update through Managed Google Play / MDM and verify chrome://version after rollout. If patching must be deferred, the most targeted compensating control is to block the Web MIDI API via enterprise policy (DefaultWebMidiSysexSetting / WebMidiAllowedForUrls denylist) or by disabling MIDI at the OS/site-permission level, which prevents the vulnerable code path from being reached at the cost of breaking any legitimate web MIDI tooling; broader fallbacks such as restricting browsing to trusted sites or enforcing Safe Browsing Enhanced Protection reduce exposure to crafted-page delivery but do not address the underlying UAF.
Use-after-free vulnerability in the DisplayObject class in the ActionScript 3 (AS3) implementation in Adobe Flash Player
V8 in Google Chrome prior to 54.0.2840.90 for Linux, and 54.0.2840.85 for Android, and 54.0.2840.87 for Windows and Mac
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Incorrect handling of complex species in V8 in Google Chrome prior to 57.0.2987.98 for Linux, Windows, and Mac and 57.0.
The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbi
An issue was discovered in the Cisco WebEx Extension before 1.0.7 on Google Chrome, the ActiveTouch General Plugin Conta
The XrayWrapper implementation in Mozilla Firefox before 35.0 and SeaMonkey before 2.32 does not properly interact with
The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 18.0, Firefox ESR 17.x before 17.0.2, Thunderbi
The Web IDL implementation in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and Se
Use-after-free vulnerability in the BitmapData class in the ActionScript 3 (AS3) implementation in Adobe Flash Player 13
Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
View allVendor StatusVendor
SUSE
Severity: HighShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-33156
GHSA-gm2w-gw5x-592f