Known Exploited Vulnerability
8.8
HIGH
CVE-2021-30551
Google Chromium V8 Type Confusion Vulnerability - [Actively Exploited]
Description

Type confusion in V8 in Google Chrome prior to 91.0.4472.101 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

INFO

Published Date :

June 15, 2021, 10:15 p.m.

Last Modified :

Feb. 4, 2025, 3:44 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
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 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.

Required Action :

Apply updates per vendor instructions.

Notes :

https://nvd.nist.gov/vuln/detail/CVE-2021-30551

Public PoC/Exploit Available at Github

CVE-2021-30551 has a 10 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-30551 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 Google chrome
: Total Affected Vendor : 2 | Products : 2
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-2021-30551.

URL Resource
https://chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop.html Release Notes
https://crbug.com/1216437 Exploit Issue Tracking Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/ Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/ Release Notes
https://security.gentoo.org/glsa/202107-06 Third Party Advisory
https://security.gentoo.org/glsa/202208-25 Third Party Advisory
https://chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop.html Release Notes
https://crbug.com/1216437 Exploit Issue Tracking Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/ Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/ Release Notes
https://security.gentoo.org/glsa/202107-06 Third Party Advisory
https://security.gentoo.org/glsa/202208-25 Third Party Advisory

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
wh1ant/vulnjs

None

Updated: 1 month, 1 week ago
24 stars 2 fork 2 watcher
Born at : March 10, 2025, 5:37 p.m. This repo has been linked 83 different CVEs too.
Profile Photo
gmh5225/vulnjs

Research browsers

JavaScript HTML

Updated: 1 month, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : March 10, 2025, 2:35 p.m. This repo has been linked 83 different CVEs too.
Profile Photo
aaronsjcho/1-day

None

JavaScript Shell WebAssembly Python HTML

Updated: 1 month, 3 weeks ago
0 stars 0 fork 0 watcher
Born at : Jan. 1, 2025, 4:22 a.m. This repo has been linked 9 different CVEs too.
Profile Photo
Birdo1221/UserAG-Changer

A Browser Extension That Changes Your User-agent, From Desktop to Macintosh to IOS + Custom UA

brower browser-extension chrome-extension css extension html javascript side-project spoofer spoofing user-agent useragent

JavaScript HTML CSS

Updated: 9 months, 2 weeks ago
0 stars 0 fork 0 watcher
Born at : July 17, 2024, 6:55 p.m. This repo has been linked 3 different CVEs too.
Profile Photo
wh1ant/vulnjs

Research browser

JavaScript HTML

Updated: 1 year, 2 months ago
1 stars 0 fork 0 watcher
Born at : Oct. 8, 2023, 11:44 a.m. This repo has been linked 20 different CVEs too.
Profile Photo
anvbis/chrome_v8_ndays

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

JavaScript

Updated: 6 days, 1 hour ago
125 stars 23 fork 23 watcher
Born at : Nov. 17, 2022, 3:04 a.m. This repo has been linked 14 different CVEs too.
Profile Photo
barney0/WU-STHACK-2022

None

Updated: 2 years, 6 months ago
0 stars 0 fork 0 watcher
Born at : Oct. 21, 2022, 8:55 a.m. This repo has been linked 1 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: 1 day, 18 hours ago
563 stars 38 fork 38 watcher
Born at : April 19, 2022, 8:58 a.m. This repo has been linked 1277 different CVEs too.
Profile Photo
xmzyshypnc/CVE-2021-30551

my exp for chrome V8 CVE-2021-30551

HTML

Updated: 1 month, 1 week ago
23 stars 12 fork 12 watcher
Born at : Aug. 22, 2021, 2:15 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
n0-traces/cve_monitor

Automatic monitor github cve using Github Actions

Python

Updated: 2 months, 1 week ago
2 stars 55 fork 55 watcher
Born at : April 7, 2021, 11:16 a.m. This repo has been linked 1008 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-2021-30551 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-30551 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. 04, 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/2021/06/stable-channel-update-for-desktop.html
    Added Reference https://crbug.com/1216437
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
    Added Reference https://security.gentoo.org/glsa/202107-06
    Added Reference https://security.gentoo.org/glsa/202208-25
  • Modified Analysis by [email protected]

    Jul. 29, 2024

    Action Type Old Value New Value
    Changed Reference Type https://chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop.html Release Notes, Vendor Advisory https://chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop.html Release Notes
    Changed Reference Type https://crbug.com/1216437 Issue Tracking, Third Party Advisory https://crbug.com/1216437 Exploit, Issue Tracking, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/ Release Notes
    Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/ Release Notes
  • 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/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/ [No types assigned]
    Added Reference Chrome https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/ [No types assigned]
    Removed Reference Chrome https://lists.fedoraproject.org/archives/list/[email protected]/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
    Removed Reference Chrome https://lists.fedoraproject.org/archives/list/[email protected]/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
  • Modified Analysis by [email protected]

    Sep. 28, 2022

    Action Type Old Value New Value
    Changed Reference Type https://security.gentoo.org/glsa/202208-25 No Types Assigned https://security.gentoo.org/glsa/202208-25 Third Party Advisory
  • CVE Modified by [email protected]

    Aug. 15, 2022

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202208-25 [No Types Assigned]
  • Modified Analysis by [email protected]

    Sep. 20, 2021

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/ Mailing List, Third Party Advisory
    Changed Reference Type https://security.gentoo.org/glsa/202107-06 No Types Assigned https://security.gentoo.org/glsa/202107-06 Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jul. 18, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 09, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 06, 2021

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202107-06 [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 17, 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/2021/06/stable-channel-update-for-desktop.html No Types Assigned https://chromereleases.googleblog.com/2021/06/stable-channel-update-for-desktop.html Release Notes, Vendor Advisory
    Changed Reference Type https://crbug.com/1216437 No Types Assigned https://crbug.com/1216437 Issue Tracking, Third Party Advisory
    Added CWE NIST CWE-843
    Added CPE Configuration OR *cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* versions up to (excluding) 91.0.4472.101
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.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-30551 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-2021-30551 weaknesses.

Exploit Prediction

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

75.78 }} -3.64%

score

0.98827

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
:
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Latest DB Update: May. 07, 2025 6:02