EUVD-2026-74317
GHSA-mp27-m726-q44c
Severity by source
AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Network delivery via crafted page (AV:N), high complexity for renderer-compromise prerequisite (AC:H), no auth needed (PR:N), user must visit page (UI:R), scope changes to host on sandbox escape (S:C), full impact post-escape (C:H/I:H/A:H).
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
Lifecycle Timeline
5DescriptionCVE.org
Privilege elevation in WebUI in Google Chrome prior to 153.0.8010.36 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: Medium)
AnalysisAI
Privilege elevation in Chrome's WebUI component prior to version 153.0.8010.36 enables sandbox escape and arbitrary code execution outside the browser sandbox when the renderer process has already been compromised. This is a second-stage, chained exploit: an attacker must first achieve renderer-level code execution (e.g., via a separate renderer bug) and then leverage this WebUI flaw (CWE-250 - execution with unnecessary privileges) to break out of the sandbox. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires two sequential conditions: (1) the attacker must first achieve arbitrary code execution within the Chrome renderer process via a separate vulnerability - this WebUI flaw is not independently reachable from a clean renderer state; and (2) the victim must visit a crafted HTML page (UI:R), providing the delivery vehicle for the renderer compromise. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.3 score with S:C and C:H/I:H/A:H correctly captures the severity of a successful sandbox escape, but AC:H is the critical qualifier - exploitation requires a pre-compromised renderer process, meaning this flaw cannot be reached without chaining it with a separate, independent renderer vulnerability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: Google Chrome 153.0.8010.36. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, assess Chrome deployment scope across your organization and confirm that version 153.0.8010.36 or later is available for your deployment model. …
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Same weakness CWE-250 – Execution with Unnecessary Privileges
View allSame technique Privilege Escalation
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External POC / Exploit Code
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