EUVD-2026-40728
GHSA-499r-fh8q-qcfc
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Remote crafted page with required user interaction (UI:R), no auth (PR:N); impact lowered to C:L/I:L/A:N since a Serial policy-enforcement bypass is niche and Chromium rates it Low, not full-system CIA.
Primary rating from Vendor (google).
CVSS VectorVendor: google
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionCVE.org
Insufficient policy enforcement in Serial in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to perform privilege escalation via a crafted HTML page. (Chromium security severity: Low)
AnalysisAI
Privilege escalation in Google Chrome desktop before 150.0.7871.47 stems from insufficient policy enforcement in the Serial (Web Serial API) component, allowing a remote attacker who lures a victim to a crafted HTML page to escalate privileges within the browser. Note the signal conflict: NVD scores this 8.8 (High) with high confidentiality/integrity/availability impact, yet Chromium's own triage rates the security severity as Low. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to open a crafted HTML page in a Chrome build prior to 150.0.7871.47 - user interaction is mandatory (CVSS UI:R), so this is not a drive-by against a fully passive user in the strictest sense but needs page navigation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals conflict and must be weighed rather than taken at face value. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker hosts or compromises a website and entices a victim to open it in a vulnerable Chrome build; the crafted HTML page abuses the insufficiently enforced Serial policy to gain privileges it should not have. Because the CVSS vector requires user interaction (UI:R) but no prior authentication (PR:N), the only prerequisite is getting the target to visit the page. … |
| Remediation | Vendor-released patch: Chrome 150.0.7871.47 - upgrade to this Stable release or later, which for most users happens automatically via Chrome's background updater; confirm the version under Settings > About Google Chrome and relaunch to apply. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory Chrome installations across the organization and confirm current version numbers. …
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Same technique Privilege Escalation
View allVendor StatusVendor
SUSE
Severity: Important| Product | Status |
|---|---|
| SUSE Package Hub 15 SP7 | Fixed |
| openSUSE Tumbleweed | Fixed |
| SUSE Package Hub 15 SP7 | Affected |
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External POC / Exploit Code
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