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Known Exploited Vulnerability
8.8
HIGH CVSS 3.1
CVE-2021-21224
Google Chromium V8 Type Confusion Vulnerability - [Actively Exploited]
Description

Type confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.

INFO

Published Date :

April 26, 2021, 5:15 p.m.

Last Modified :

Feb. 5, 2025, 1:57 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

Google Chromium V8 Engine contains a type confusion vulnerability that allows a remote attacker to execute code inside a sandbox 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.

Required Action :

Apply updates per vendor instructions.

Notes :

https://nvd.nist.gov/vuln/detail/CVE-2021-21224

Affected Products

The following products are affected by CVE-2021-21224 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Fedoraproject fedora
1 Debian debian_linux
1 Google chrome
: Total Affected Vendor : 3 | Products : 3
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
CVSS 3.1 HIGH [email protected]
CVSS 3.1 HIGH 134c704f-9b21-4f2e-91b3-4a467353bcc0
Solution
The vulnerability allows a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page; upgrading to the latest version of the affected web browsers will remediate this issue.
  • Upgrade to the latest version of Google Chrome.
  • Upgrade to the latest version of Chromium.
  • Upgrade to the latest version of Microsoft Edge or Opera.
Public PoC/Exploit Available at Github

CVE-2021-21224 has a 9 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-21224.

URL Resource
https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html Release Notes
https://crbug.com/1195777 Exploit Issue Tracking
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/ Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/ Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/ Release Notes
https://security.gentoo.org/glsa/202104-08 Third Party Advisory
https://www.debian.org/security/2021/dsa-4906 Mailing List Third Party Advisory
https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html Release Notes
https://crbug.com/1195777 Exploit Issue Tracking
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/ Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/ Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/ Release Notes
https://security.gentoo.org/glsa/202104-08 Third Party Advisory
https://www.debian.org/security/2021/dsa-4906 Mailing List Third Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-21224 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-21224 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
mwlik/v8-resources

A bunch of V8 resources (with a security focus)

browser-exploitation v8

Updated: 1 week, 2 days ago
53 stars 7 fork 7 watcher
Born at : Jan. 6, 2025, 5:14 p.m. This repo has been linked 12 different CVEs too.
Profile Photo
whoforget/CVE-POC

None

Updated: 2 years, 5 months ago
0 stars 2 fork 2 watcher
Born at : April 8, 2023, 6:19 a.m. This repo has been linked 928 different CVEs too.
Profile Photo
k0mi-tg/CVE-POC

None

Updated: 1 year, 6 months ago
20 stars 3 fork 3 watcher
Born at : Feb. 14, 2023, 6:10 p.m. This repo has been linked 921 different CVEs too.
Profile Photo
anvbis/chrome_v8_ndays

Chrome V8 n-day exploits that I've written.

JavaScript

Updated: 1 month, 1 week ago
134 stars 24 fork 24 watcher
Born at : Nov. 17, 2022, 3:04 a.m. This repo has been linked 14 different CVEs too.
Profile Photo
soosmile/POC

None

Updated: 5 months ago
9 stars 1 fork 1 watcher
Born at : June 21, 2022, 7:45 a.m. This repo has been linked 944 different CVEs too.
Profile Photo
Ostorlab/KEV

Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.

cisa-kev vulnerability 0day cisa exploits

Updated: 3 weeks, 2 days ago
581 stars 42 fork 42 watcher
Born at : April 19, 2022, 8:58 a.m. This repo has been linked 1287 different CVEs too.
Profile Photo
merc1995/1195777-chrome0day

None

HTML

Updated: 3 years, 7 months ago
0 stars 8 fork 8 watcher
Born at : Feb. 7, 2022, 10:03 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
c3l3si4n/malicious_nuclei_templates

Collection of nuclei templates that can be used for malicious purposes

Updated: 11 months, 3 weeks ago
7 stars 1 fork 1 watcher
Born at : Sept. 24, 2021, 1:27 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
StarCrossPortal/bug-hunting-101

None

C++ HTML Objective-C++

Updated: 1 month, 1 week ago
333 stars 53 fork 53 watcher
Born at : Sept. 15, 2021, 10:13 a.m. This repo has been linked 20 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-21224 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2021-21224 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Modified Analysis by [email protected]

    Feb. 05, 2025

    Action Type Old Value New Value
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jan. 29, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Added CWE CWE-843
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html
    Added Reference https://crbug.com/1195777
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/
    Added Reference https://security.gentoo.org/glsa/202104-08
    Added Reference https://www.debian.org/security/2021/dsa-4906
  • Modified Analysis by [email protected]

    Jul. 25, 2024

    Action Type Old Value New Value
    Changed Reference Type https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html Release Notes, Third Party Advisory https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html Release Notes
    Changed Reference Type https://crbug.com/1195777 Third Party Advisory https://crbug.com/1195777 Exploit, Issue Tracking
    Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/ Release Notes
    Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/ Release Notes
    Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/ Release Notes
    Changed Reference Type https://www.debian.org/security/2021/dsa-4906 Third Party Advisory https://www.debian.org/security/2021/dsa-4906 Mailing List, Third Party Advisory
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Chrome https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/ [No types assigned]
    Added Reference Chrome https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/ [No types assigned]
    Added Reference Chrome https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/ [No types assigned]
    Removed Reference Chrome https://lists.fedoraproject.org/archives/list/[email protected]/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/
    Removed Reference Chrome https://lists.fedoraproject.org/archives/list/[email protected]/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/
    Removed Reference Chrome https://lists.fedoraproject.org/archives/list/[email protected]/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/
  • Modified Analysis by [email protected]

    Jun. 01, 2021

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/ Mailing List, Third Party Advisory
    Changed Reference Type https://security.gentoo.org/glsa/202104-08 No Types Assigned https://security.gentoo.org/glsa/202104-08 Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    May. 14, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/ [No Types Assigned]
  • CVE Modified by [email protected]

    May. 12, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/ [No Types Assigned]
  • CVE Modified by [email protected]

    May. 01, 2021

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202104-08 [No Types Assigned]
  • Modified Analysis by [email protected]

    Apr. 30, 2021

    Action Type Old Value New Value
    Changed Reference Type https://www.debian.org/security/2021/dsa-4906 No Types Assigned https://www.debian.org/security/2021/dsa-4906 Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Apr. 29, 2021

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2021/dsa-4906 [No Types Assigned]
  • Initial Analysis by [email protected]

    Apr. 27, 2021

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html No Types Assigned https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html Release Notes, Third Party Advisory
    Changed Reference Type https://crbug.com/1195777 No Types Assigned https://crbug.com/1195777 Third Party Advisory
    Added CWE NIST CWE-843
    Added CPE Configuration OR *cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* versions up to (excluding) 90.0.4430.85
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 8.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 6.8
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

65.44 }} -1.30%

score

0.98419

percentile