Is CVE-2021-4102 actively exploited?

Yes. CVE-2021-4102 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2021-4102 be exploited remotely?

The attack vector of CVE-2021-4102 has not been classified yet.

What is the CVSS score of CVE-2021-4102?

CVE-2021-4102 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2021-4102

HIGHCISA KEVIN THE WILD

CVE-2021-4102

Published: December 15, 2021

EPSS:5.46%probability of exploitation in 30 daysPercentile:90.0th

Official Description

Google Chromium V8 Engine contains a use-after-free vulnerability that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

NVD Source

CISA KEV Advisory

Google Chromium V8 Use-After-Free Vulnerability

Added to KEV: 2021-12-15Federal patch deadline: 2021-12-29

Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

A use-after-free vulnerability in the Google Chromium V8 Engine allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. The high EPSS score of 0.05459 indicates a significant likelihood of exploitation, and its inclusion in CISA's KEV confirms it has been actively exploited.

This vulnerability is actively being exploited in the wild. Exploitation occurs via a crafted HTML page, indicating a remote attack vector.

Recommended Action

Users of Chromium-based browsers such as Google Chrome, Microsoft Edge, and Opera should update their browsers to the latest available versions immediately to patch this vulnerability.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2021-4102 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2021-4102 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.