CVE intelligence

CVE-2026-78999

Vulnerability intelligence

Published Aug 25, 2026Sources checked Sep 12, 2026

8.3HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-78999 and is rated High severity with a CVSS score of 8.3. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

CISA KEVNot listedBased on the latest collected catalog

EPSS0.5%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-78999?

Improper privilege management in Navigation in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)