Is CVE-2021-38000 actively exploited?

Yes. CVE-2021-38000 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2021-38000 be exploited remotely?

The attack vector of CVE-2021-38000 has not been classified yet.

What is the CVSS score of CVE-2021-38000?

CVE-2021-38000 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2021-38000

HIGHCISA KEVIN THE WILD

CVE-2021-38000

Published: November 3, 2021

EPSS:3.19%probability of exploitation in 30 daysPercentile:86.8th

Official Description

Google Chromium Intents contains an improper input validation vulnerability that allows a remote attacker to arbitrarily browser to a malicious URL 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 Intents Improper Input Validation Vulnerability

Added to KEV: 2021-11-03Federal patch deadline: 2021-11-17

Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

Google Chromium Intents contains an improper input validation vulnerability that allows a remote attacker to arbitrarily redirect to a malicious URL via a crafted HTML page. This high-severity flaw is actively exploited in the wild, posing a risk of user redirection to harmful sites.

This vulnerability is actively being exploited in the wild. Exploitation occurs remotely when a user encounters a crafted HTML page.

Recommended Action

Update Chromium-based web browsers, such as Google Chrome, Microsoft Edge, and Opera, to their latest secure versions to address this input validation flaw.

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-2021-38000 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-2021-38000 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.