Severity by source
Sources disagree (Low–Critical)AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
AC:H because exploitation requires first chaining a separate renderer compromise; UI:R for the crafted page; S:C and full C/I/A impact reflect the sandbox escape to higher privilege.
vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.
CVSS VectorVendor: google
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Updater in Google Chrome on Windows prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Low)
AnalysisAI
Sandbox escape in Google Chrome for Windows before 150.0.7871.47 lets an attacker who has already compromised the renderer process abuse a use-after-free in the Updater component via a crafted HTML page to break out of the browser sandbox. It is a second-stage bug that Chromium rated only Low severity despite the CVSS 9.6 score, with no public exploit identified at time of analysis and a low EPSS probability of 0.18% (8th percentile). Google has shipped a fixed Stable-channel build.
Technical ContextAI
The flaw is a CWE-416 use-after-free in Chrome's Updater subsystem, the component responsible for keeping the browser up to date. Use-after-free bugs arise when memory is freed but a dangling pointer is subsequently reused, allowing an attacker to control freed-then-reallocated memory and corrupt program state. In Chromium's multi-process security architecture, untrusted web content runs inside a low-privilege renderer sandbox; escaping that sandbox to reach a higher-privileged component like the Updater is the class of bug being exploited here. Affected builds are the Windows desktop Chrome Stable channel prior to 150.0.7871.47; the EUVD advisory (EUVD-2026-40800) and Chrome release notes tie the fix to that version.
RemediationAI
Vendor-released patch: update Google Chrome to 150.0.7871.47 or later on Windows via the Chrome Releases Stable Channel update (https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html); Chrome normally auto-updates, so verify the running version under chrome://settings/help and relaunch to apply, and in managed fleets confirm your update policy is not pinning an older build. Because the flaw resides in the Updater component itself, do not disable Chrome's auto-update as a mitigation - that would keep users on the vulnerable code and remove the very mechanism that delivers the fix. Until the patched build is deployed, the practical compensating control is to reduce exposure of the necessary first stage (renderer compromise): keep Chrome fully current, enable Enhanced Safe Browsing to reduce the chance of a renderer-exploiting page, and restrict browsing of untrusted sites; note these lower but do not eliminate risk since a chained renderer bug is still the entry point.
Same weakness CWE-416 – Use After Free
View allSame technique Denial Of Service
View allVendor StatusVendor
SUSE
Severity: Critical| Product | Status |
|---|---|
| SUSE Package Hub 15 SP7 | Fixed |
| openSUSE Tumbleweed | Fixed |
| SUSE Package Hub 15 SP7 | Affected |
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-40800
GHSA-7fhx-xxr5-6g2j