CVE-2026-85046

Published Sep 3, 2026

Last updated a month ago

Exploit known CVSS high 8.8

Google Chrome

Ubuntu

Zero-day

Chromium

Overview

AI description

Automated description summarized from trusted sources.

CVE-2026-85046 is identified as a type confusion vulnerability residing within V8, the JavaScript and WebAssembly engine utilized by Google Chrome. This flaw enables a remote attacker to execute arbitrary code within the browser's sandbox by enticing a user to visit a specially crafted HTML page. The technical root cause of this vulnerability involves a bug in the V8 compilers, which leads to an array containing `PACKED_ELEMENTS` incorrectly receiving the map `PACKED_SMI_ELEMENTS`. This misclassification can be exploited to achieve arbitrary read and write capabilities on the JavaScript heap. The vulnerability was discovered and reported by security researcher Salvatore Gulizia (aka Serotav) on August 4, 2026, and affects Google Chrome versions prior to 152.0.7977.82. Google has released updates to address this issue, and has acknowledged that an exploit for CVE-2026-85046 exists in the wild.

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)
Source: chrome-cve-admin@google.com
NVD status: Analyzed
Products: chrome, v8

Risk scores

CVSS 3.1

Type: Secondary
Base score: 8.8
Impact score: 5.9
Exploitability score: 2.8
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: HIGH

Known exploits

Data from CISA

Vulnerability name: Google Chromium V8 Type Confusion Vulnerability
Exploit added on: Sep 4, 2026
Exploit action due: Sep 18, 2026
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.

Weaknesses

chrome-cve-admin@google.com: CWE-843

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "E7133861-8AAD-49BB-9137-9D737B466E1E",
            "versionEndExcluding": "152.0.7977.82",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  },
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:google:v8:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "62F85713-22F2-43E2-B84B-F4E9E0B56490",
            "versionEndExcluding": "15.3.48",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.