CVE-2026-85046
High 8.8 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Google Chromium V8 Type Confusion Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Description
Type confusion in V8 in Google Chrome prior to 152.0.7977.82 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
Metrics
- CVSS 3.1
-
8.8 (HIGH)
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 2% (percentile: 79) as of 1 November 2026
- CWE
- CWE-843
Affected products
google: chrome; google: v8
References
- https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop… Release NotesVendor Advisory
- https://github.com/v8/v8/commit/e0562d87ad9c17042b581582c99237d798572e67 Patch
- https://github.com/Serotav/Writeups/blob/77556c57999805fa7815a114da51d91cf24fbe… ExploitThird Party Advisory
- https://serotav.github.io/Writeups/v8/when-sorting-leads-to-confusion/ ExploitThird Party Advisory
- https://issues.chromium.org/issues/542403045 Permissions Required
- https://news.ycombinator.com/item?id=49570669 Issue TrackingThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026… US Government Resource