EUVD-2026-74449
GHSA-7mj6-6r2r-q498
Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L
Renderer pre-compromise drives AC:H; UI spoofing has no meaningful availability impact, so A:N rather than A:L.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
Lifecycle Timeline
4DescriptionCVE.org
Confused deputy in Fullscreen in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to spoof UI elements via a crafted HTML page. (Chromium security severity: Low)
AnalysisAI
UI spoofing via a confused deputy flaw in Google Chrome's Fullscreen API (all versions prior to 153.0.8010.36) enables a remote attacker who has already compromised the renderer process to impersonate browser-trusted UI elements using a crafted HTML page and social engineering. This is a secondary exploitation step - it does not provide initial access - and becomes relevant only after a separate, higher-severity renderer compromise has been achieved. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires two sequential prerequisites, both of which must be satisfied: (1) the attacker must have independently compromised the Chrome renderer process through a separate vulnerability before this flaw can be leveraged - this is the dominant barrier and is reflected in CVSS AC:H; and (2) the victim must be actively social-engineered to remain in a fullscreen browser session initiated by a crafted HTML page, satisfying CVSS UI:R. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 4.2 (AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L) appropriately captures the high attack complexity introduced by the renderer pre-compromise prerequisite and the required user interaction via social engineering. … 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: Chrome 153.0.8010.36. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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