EUVD-2026-65772
GHSA-c5f5-xjjx-8q3m
Severity by source
AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
AC:H reflects mandatory pre-existing renderer compromise; S:C and C/I/A:H reflect full sandbox escape yielding unrestricted host-level code execution.
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
Integer overflow in Chromecast in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
AnalysisAI
Integer overflow in the Chromecast component of Google Chrome prior to 152.0.7977.65 enables a remote attacker who has already compromised the renderer process to escape the browser sandbox and execute arbitrary code on the underlying operating system via a crafted HTML page. The CVSS score of 8.3 reflects the full scope change (S:C) and complete confidentiality, integrity, and availability impact once the sandbox boundary is crossed, while AC:H acknowledges the mandatory pre-existing renderer compromise required to reach the vulnerable code path. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires two concurrent preconditions: first, the victim user must navigate to a crafted HTML page (UI:R - active user interaction is mandatory and non-negotiable); second, the attacker must have already achieved code execution within Chrome's renderer process through a separate, unspecified vulnerability, since this integer overflow is a sandbox escape and not an initial-access primitive. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.3 score (AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H) reflects a tension between severe potential impact - full sandbox escape delivering complete host-level C/I/A compromise - and the significant exploitation complexity introduced by the mandatory two-stage attack chain. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker first exploits a separate, unspecified renderer vulnerability to gain code execution within Chrome's sandboxed renderer process - likely delivered via a crafted or compromised web page through phishing or malvertising - and then leverages the integer overflow in the Chromecast component to corrupt memory across the sandbox boundary, achieving arbitrary code execution at a higher privilege level on the host OS. The UI:R requirement means the victim must actively navigate to the attacker's page, making social engineering the realistic initial delivery mechanism. … |
| Remediation | Update Google Chrome to version 152.0.7977.65 or later, which is the vendor-released patch per the stable channel 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 versions across your organization using endpoint telemetry and MDM agents to identify systems running versions prior to 152.0.7977.65. …
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Same weakness CWE-190 – Integer Overflow or Wraparound
View allSame technique Integer Overflow
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External POC / Exploit Code
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