EUVD-2026-65965
GHSA-v5h6-h63r-qg79
Severity by source
AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
AC:H reflects the chained renderer-compromise prerequisite; S:C captures sandbox escape; PR:N applies because the UAF trigger itself requires no prior authentication.
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
Use-after-free in Google Chrome's Chromecast component allows a remote attacker who has already compromised the renderer process to escape the sandbox and execute arbitrary code on the underlying system via a crafted HTML page. Affected versions are all Chrome releases prior to 152.0.7977.65. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires two conditions to be met sequentially: first, the attacker must have already achieved code execution within Chrome's renderer process via a separate, unspecified vulnerability; second, the victim user must navigate to or be directed to a crafted HTML page while the renderer is under attacker control (UI:R). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 8.3 (AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H) reflects the high potential impact of a full sandbox escape, but AC:H and the implicit requirement for a pre-compromised renderer significantly reduce the realistic attacker population. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker first exploits a separate Chrome renderer vulnerability to gain code execution within the sandboxed renderer process. They then serve a crafted HTML page triggering the use-after-free in the Chromecast component, causing Chrome to reference attacker-controlled memory and redirecting execution outside the sandbox. … |
| Remediation | Update Google Chrome to version 152.0.7977.65 or later immediately - this is the vendor-confirmed fix documented in the Chrome Stable Channel update 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 and prepare patch deployment for version 152.0.7977.65 or later; identify any Chrome devices in restricted-access environments that may face barriers to auto-update. …
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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
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