CVE-2021-38003

CVE Enrichment

CVSS: 8.8 HIGH
EPSS: 38.57%
EPSS Percentile: 98.55%
CISA KEV: YES — Known Exploited Vulnerability

Description

Inappropriate implementation in V8 in Google Chrome prior to 95.0.4638.69 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: chrome-cve-admin@google.com
Published: 24-Nov-2021 05:15
Last Modified: 17-Jun-2026 11:01
EPSS Date: 2026-10-11
CWE: CWE-755

CVSS Vector


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

CISA KEV Details

Date Added: 2021-11-03
Remediation Due: 2021-11-17
Known Ransomware Campaign Use: Unknown
Required Action: Apply updates per vendor instructions.
Notes: https://nvd.nist.gov/vuln/detail/CVE-2021-38003

Affected Products / Versions

google / chrome
Version / affected range: * · before (exclusive) 95.0.4638.69
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
fedoraproject / fedora
Version / affected range: 34
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
debian / debian_linux
Version / affected range: 10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
debian / debian_linux
Version / affected range: 11.0
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

References

Last enrichment sync: 12-Oct-2026 17:15
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (3)

CVE-2021-38003 Recorded Future Reports 94 High-Impact Vulnerabilities in September 2026, Including 80 Actively Exploited
The exploit page at noht1ng.top served a JavaScript exploit for CVE-2021-38003, a V8 type confusion vulnerability in JSON.stringify that affects Chrome versions prior to 95.0.4638.69. Sogou Input Method Flaw Let UNC3569 Deliver GRAYRABBIT Backdoor with a Single Click
The vulnerabilities, which were discovered in 2021, are CVE-2021-37973, CVE-2021-37976, CVE-2021-38000, CVE-2021-38003 — all of which affect Google Chrome, and CVE-2021-1048 in Linux and Android. Cisco Talos Details How Intellexa’s ALIEN and PREDATOR Spyware Target Android

CVE (80)

Malware (9)

Threat Actors (8)

MITRE ATT&CK (20)

Vendors (15)

Products (74)

Tools (9)

Industries (5)

Countries (4)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.