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
4DescriptionCVE.org
Use after free in Ozone in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code via a crafted HTML page. (Chromium security severity: Critical)
AnalysisAI
Remote code execution in Google Chrome's Ozone display server layer affects all desktop versions prior to 149.0.7827.53, where a use-after-free memory corruption flaw can be triggered by a crafted HTML page. Chromium-internal severity is rated Critical and the CVSS 3.1 score of 8.8 reflects high impact across confidentiality, integrity, and availability, though exploitation requires user interaction (visiting an attacker-controlled page). No public exploit has been identified at time of analysis, and CISA SSVC currently lists Exploitation as 'none'.
Technical ContextAI
Ozone is Chromium's platform abstraction layer for windowing, display, and input handling - it brokers between the browser's rendering pipeline and the underlying OS graphics stack (X11, Wayland, Aura, etc.). CWE-416 (use-after-free) in this component means the renderer or browser process retains and dereferences a pointer to memory that has already been freed, an exploit primitive that historically yields reliable type confusion and read/write gadgets when combined with a heap-grooming JavaScript payload. Because Ozone touches OS-level graphics handles, successful exploitation against a sandboxed renderer can also serve as a stepping stone toward sandbox escape, which aligns with the Critical Chromium severity rating despite the network-vector CVSS being capped at 8.8 by the UI:R requirement.
RemediationAI
Vendor-released patch: Chrome 149.0.7827.53 - update to this version or later via the Chrome Stable Channel as described at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html, and in managed environments use Chrome Browser Cloud Management or your endpoint manager to force-relaunch browsers to apply the update. Until the patched build is deployed, the most effective compensating control is restricting users from browsing untrusted sites via enterprise web filtering or proxy policy (trade-off: degrades general browsing utility); disabling JavaScript on untrusted origins via Chrome policy (DefaultJavaScriptSetting=2 with explicit allowlist) makes exploiting a renderer-side UAF substantially harder but breaks most modern web applications. Site Isolation and the renderer sandbox are already enabled by default and reduce post-exploitation impact, but do not prevent the initial RCE in the renderer process. Chromium-derivative browsers (Edge, Brave, Opera, Vivaldi) should be updated as soon as their upstream rebases land.
Use-after-free vulnerability in the DisplayObject class in the ActionScript 3 (AS3) implementation in Adobe Flash Player
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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 Memory Corruption
View allVendor StatusVendor
SUSE
Severity: High| Product | Status |
|---|---|
| openSUSE Tumbleweed | Fixed |
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-34344
GHSA-72hc-c42c-v857