EUVD-2026-65967
GHSA-m6fg-434g-56xq
Severity by source
AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Renderer pre-compromise prerequisite independently warrants AC:H; cross-sandbox execution escape drives S:C with full C/I/A impact.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
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 Chromecast in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)
AnalysisAI
Sandbox escape via use-after-free in Chrome's Chromecast component allows remote code execution outside the browser sandbox on all platforms running Chrome prior to 152.0.7977.65. This is a chained exploit: an attacker must first compromise the renderer process, then leverage the Chromecast UAF to pivot into the browser process and escape Chrome's sandbox via a crafted HTML page. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Two specific prerequisites must both be satisfied for exploitation: (1) the victim must be running Google Chrome prior to version 152.0.7977.65 on any desktop platform, and (2) the attacker must have already achieved a renderer process compromise - this UAF is a sandbox escape step within a chained attack, not a standalone entry point. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.3 score with changed scope and full C/I/A impact accurately captures theoretical severity - successful exploitation yields arbitrary code execution outside Chrome's sandbox. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has already compromised a Chrome renderer process - for example, by exploiting a separate renderer-level vulnerability via a malicious or attacker-controlled website - serves a crafted HTML page that triggers the Chromecast use-after-free bug in the browser process. By manipulating freed heap memory, the attacker redirects execution flow outside Chrome's sandbox and achieves arbitrary code execution at the host process privilege level. … |
| Remediation | The primary fix is to upgrade Google Chrome to version 152.0.7977.65 or later, as confirmed by the vendor advisory at https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Chrome installations across the organization and identify systems running versions prior to 152.0.7977.65. …
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Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
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External POC / Exploit Code
Leaving vuln.today