CVE-2025-9866

EUVD-2025-26672
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)
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA-ADPADP
8.8 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 16%
Affected Products (NVD)
VendorProductVersion
googlechrome
𝑥
< 140.0.7339.80
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
chromium
bookworm
143.0.7499.169-1~deb12u1
fixed
bookworm (security)
145.0.7632.116-1~deb12u1
fixed
bullseye
vulnerable
bullseye (security)
vulnerable
forky
145.0.7632.116-1
fixed
sid
145.0.7632.159-1
fixed
trixie
143.0.7499.169-1~deb13u1
fixed
trixie (security)
145.0.7632.116-1~deb13u1
fixed
Common Weakness Enumeration
References
https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop.html
https://issues.chromium.org/issues/379337758