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
Inappropriate implementation in Isolated Web Apps in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a malicious file. (Chromium security severity: Medium)
AnalysisAI
Arbitrary code execution within the Chrome sandbox affects Google Chrome desktop builds prior to 149.0.7827.53 due to an inappropriate implementation in the Isolated Web Apps (IWA) component. A remote attacker who convinces a user to open a malicious file can execute code confined to the sandbox process, with no public exploit identified at time of analysis and an EPSS score of only 0.03% (10th percentile) indicating low predicted exploitation likelihood. Google has shipped a fix in the stable channel update for desktop.
Technical ContextAI
Isolated Web Apps are a Chromium feature designed to package web applications with stronger isolation guarantees and elevated platform capabilities, relying on a bundled signed web bundle format and a dedicated process model distinct from regular web origins. The flaw lies in how Chrome's IWA implementation handles a malicious file, allowing the attacker's payload to run inside the renderer/IWA sandbox process - code execution is therefore constrained by Chrome's multi-process sandbox and would normally require a separate sandbox escape bug to achieve full host compromise. No CWE was assigned by NVD, but the wording 'inappropriate implementation' is Chrome's standard label for logic-flaw classes rather than memory corruption, and the affected component is identified via CPE cpe:2.3:a:google:chrome:*.
RemediationAI
Vendor-released patch: Google Chrome 149.0.7827.53 - update Chrome via the built-in updater or by redeploying managed installers, then restart the browser so the new binaries take effect, per the advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html. For fleets that cannot patch immediately, disable the Isolated Web Apps feature via enterprise policy (IsolatedWebAppInstallForceList left empty and the IsolatedWebAppsEnabled / chrome://flags/#enable-isolated-web-apps trial turned off) to remove the affected surface, accepting that any legitimately deployed IWA-packaged internal applications will stop working; additionally, instruct users not to open untrusted files via the browser and consider tightening email/web gateway file-type filtering to reduce the chance of the malicious-file delivery vector. Track downstream Chromium-based browsers (Edge, Brave, Opera) for their respective security updates incorporating the same fix.
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Vendor StatusVendor
SUSE
| Product | Status |
|---|---|
| openSUSE Tumbleweed | Fixed |
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-34563
GHSA-qmv8-5r2w-3px8