CVE-2025-9866

HIGH

Google Chrome <140.0.7339.80 - Auth Bypass

Title source: llm
STIX 2.1

Description

Inappropriate implementation in Extensions in Google Chrome prior to 140.0.7339.80 allowed a remote attacker to bypass content security policy via a crafted HTML page. (Chromium security severity: Medium)

References (2)

Scores

CVSS v3 8.8
EPSS 0.0008
EPSS Percentile 23.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-693
Status published
Products (1)
google/chrome < 140.0.7339.80
Published Sep 03, 2025
Tracked Since Feb 18, 2026