Is CVE-2021-37975 actively exploited?

Yes. CVE-2021-37975 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2021-37975 be exploited remotely?

The attack vector of CVE-2021-37975 has not been classified yet.

What is the CVSS score of CVE-2021-37975?

CVE-2021-37975 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2021-37975

HIGHCISA KEVIN THE WILD

CVE-2021-37975

Published: November 3, 2021

EPSS:55.21%probability of exploitation in 30 daysPercentile:98.0th

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: 2021-11-03Federal patch deadline: 2021-11-17

Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

This use-after-free vulnerability in the Google Chromium V8 Engine allows a remote attacker to potentially exploit heap corruption through a specially crafted HTML page. This is a high-severity flaw, and its presence in the KEV catalog with a high EPSS score indicates a confirmed and significant likelihood of exploitation.

This vulnerability is actively being exploited in the wild and is listed in CISA's KEV catalog, confirming its real-world exploitation.

Recommended Action

Update web browsers that utilize Chromium, such as Google Chrome, Microsoft Edge, and Opera, to the latest available versions. Users should exercise caution when visiting untrusted websites.

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-2021-37975 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-2021-37975 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.