CVE-2025-9866CWE-693

CVE-2025-9866

High · published September 3, 2025

CVSS v3.1
8.8
EPSS
0%
Percentile
30.5
In the wild
Unconfirmed
What it is

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)

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00377 · 30.5th percentile
Weakness
CWE-693 · Protection Mechanism Failure
Published
2025-09-03T21:15Z
Affected products (1)
ProductVersionsFixed in
google/chrome< 140.0.7339.80140.0.7339.80
References (2)
https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop.html · [email protected]https://issues.chromium.org/issues/379337758 · [email protected]
EPSS history
Timeline
  • 03 SEP 16:17Z
    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…
    cvelistv5