Security Vulnerability CVE-2021-38000 - Complete Analysis and Details

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CVE-2021-38000

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National Vulnerability Database Information

Description: Insufficient validation of untrusted input in Intents in Google Chrome on Android prior to 95.0.4638.69 allowed a remote attacker to arbitrarily browser to a malicious URL via a crafted HTML page.

CVSS Base Score: 6.1 (v3.1)

The **CVSS Base Score** is a score from **0 to 10** that represents the intrinsic severity of a vulnerability. A higher score indicates greater severity.

Value

0.02.55.07.510.0

Published on: 11/23/2021 22:15:07
Last modified: 10/24/2025 13:55:42
NIST: CVE source from the National Vulnerability Database (NVD)

CVSS Metrics Details

Base Severity: MEDIUM
Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: NONE
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality Impact: LOW
Integrity Impact: LOW
Availability Impact: NONE

Common Weakness Enumeration (CWE)

Database CWE: v4.18

CWE-601: URL Redirection to Untrusted Site ('Open Redirect') ↗

The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

CWE-20: Improper Input Validation ↗

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Fonte: MITRE CWE

FIRST Information

EPSS Score: 0.0251

The **EPSS (Exploit Prediction Scoring System)** is a score from **0 to 1** that indicates the **probability** that a vulnerability will be exploited in the real world in the next 30 days. A higher value indicates a greater likelihood of exploitation.

Value

0.00.250.50.751.0

Percentile: 0.8486

The **Percentile** indicates how much higher this vulnerability's EPSS score is compared to all other vulnerabilities in the EPSS database. For example, a percentile of 0.90 (90%) means that 90% of vulnerabilities have an EPSS score equal to or lower than the current one.

Value

0.00.250.50.751.0

*Data updated as of: 2025-12-08

CISA Information (Known Exploited Vulnerabilities)

The **CISA KEV Catalog** lists vulnerabilities that have been **actively exploited in the real world**. If a CVE is present in this catalog, it indicates that the threat is immediate and mitigation should be a top priority.

CVE **CVE-2021-38000** **IS PRESENT** in the CISA KEV Catalog!

Vulnerability Name: Google Chromium Intents Improper Input Validation Vulnerability
Short 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.
Date Added to KEV: 11/03/2021
Vendor/Product: Google / Chromium Intents
Required Action: Apply updates per vendor instructions.
Due Date: 11/17/2021

Articles published on Red Hot Cyber

NVD References

Exploit PoC from GitHub

No results found on GitHub for this CVE.