Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-4101

28
FAUCET Score

CVE-2021-4101 describes a heap buffer overflow vulnerability in Swiftshader within Google Chrome versions prior to 96.0.4664.110. This flaw allows a remote attacker to potentially corrupt heap memory by enticing a user to visit a specially crafted HTML page. With a CVSS score of 8.8 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to high impact on confidentiality, integrity, and availability. While there is no evidence of active exploitation (KEV list) or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 96.0.4664.110CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.04%
Probability of exploitation in next 30 days
EPSS Percentile
60.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0104 is in the 60th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

microsoftpatch availablevia msrc
Product: Microsoft Edge (Chromium-based)Fixed in: 96.0.1054.57
googlevendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

microsoft2021-Dec/CVE-2021-4101

Chromium: CVE-2021-4101 Heap buffer overflow in Swiftshader

Dec 14, 2021

References

chromereleases.googleblog.com / 2021/12/stable-channel-update-for-desktop_13.html
Release NotesVendor Advisory
crbug.com / 1262080
Third Party Advisory