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CVE-2021-4068

23
FAUCET Score

CVE-2021-4068 is a medium-severity vulnerability affecting Google Chrome prior to version 96.0.4664.93, as well as various Debian and Fedora distributions. It stems from insufficient data validation in the new tab page, allowing a remote attacker to leak cross-origin data through a specially crafted HTML page. The vulnerability has a CVSS score of 6.5, indicating a network-based attack with low complexity, requiring user interaction, and leading to high confidentiality impact without affecting integrity or availability. While there is no evidence of active exploitation, public exploit code, or Metasploit/Nuclei modules, the vulnerability has garnered significant community discussion and media coverage, suggesting awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
< 96.0.4664.93CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.30%
Probability of exploitation in next 30 days
EPSS Percentile
67.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0130 is in the 80th percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

microsoftpatch availablevia msrc
Product: Microsoft Edge (Chromium-based)Fixed in: 96.0.1054.53
googlevendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

microsoft2021-Dec/CVE-2021-4068

Chromium: CVE-2021-4068 Insufficient validation of untrusted input in new tab page

Dec 14, 2021

References

chromereleases.googleblog.com / 2021/12/stable-channel-update-for-desktop.html
Vendor Advisory
crbug.com / 1265197
Permissions Required
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744
security.gentoo.org / glsa/202208-25
Third Party Advisory
debian.org / security/2022/dsa-5046
Third Party Advisory