Severity by source
Sources disagree (Low–Critical)AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Network-reachable crafted page (AV:N), no auth (PR:N), user must open the page (UI:R), low complexity (AC:L); high renderer impact but no scope change since execution stays in the sandbox (S:U).
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CVSS VectorVendor: Chrome
Lifecycle Timeline
5DescriptionCVE.org
Use after free in Sync in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Low)
AnalysisAI
Remote code execution in Google Chrome's Sync component (versions prior to 151.0.7922.72) allows a remote attacker to run arbitrary code within the renderer sandbox when a victim visits a crafted HTML page. The flaw is a CWE-416 use-after-free reported internally by the Chrome team; it carries a CVSS 8.8 but Chromium rated the security severity as Low, and code execution is confined to the sandbox rather than the host OS. No public exploit has been identified at time of analysis, and EPSS is low at 0.21% (12th percentile).
Technical ContextAI
The vulnerability resides in Chrome's Sync feature, the subsystem that reconciles bookmarks, history, passwords, tabs and settings across a user's signed-in devices. The root cause is CWE-416 (use-after-free): an object is freed while a dangling pointer to it is still reachable, allowing an attacker to reallocate the freed memory with controlled data and hijack subsequent dereferences to corrupt memory and gain execution. Because this lives in the renderer/browser process code path exercised by page content, an attacker-controlled HTML page can drive the freed-then-reused object into a state that yields arbitrary code execution within Chrome's sandbox. The affected CPE is cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*, covering the Chrome desktop stable channel.
RemediationAI
Vendor-released patch: update Google Chrome to 151.0.7922.72 or later; the fix ships via the stable channel update documented at https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html. In managed environments, verify auto-update is enabled and force a relaunch to apply the new binary, since the patch only takes effect after Chrome restarts. Where immediate patching is not possible, the practical compensating control is to ensure the sandbox is not disabled (do not run with --no-sandbox), which contains the arbitrary code execution to the renderer; you may also reduce exposure by restricting browsing to trusted sites via policy or web filtering, at the cost of user friction. Disabling the Chrome Sync feature is a plausible targeted mitigation given the flaw is in the Sync component, though the crafted-HTML trigger means page rendering is the exposure surface, so patching remains the only complete fix. Additional tracking reference: https://issues.chromium.org/issues/513127137.
Same weakness CWE-416 – Use After Free
View allVendor StatusVendor
SUSE
Severity: Critical| Product | Status |
|---|---|
| SUSE Package Hub 15 SP7 | Fixed |
| openSUSE Leap 16.0 | Fixed |
| SUSE Package Hub 15 SP7 | Affected |
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-50667
GHSA-qj3x-9f7x-j3vf