Which products and versions are affected by CVE-2021-30632?

Affected: Chrome (Google) versions >= unspecified; Fedora (Fedoraproject) versions 33, 35; chromium (arch), among others. The full list is in the CVE brief.

Is CVE-2021-30632 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 8, 2021.

Is CVE-2021-30632 in the CISA KEV catalog?

Yes. It was added on Nov 3, 2021 with a federal remediation due date of Nov 17, 2021.

Is there a public exploit for CVE-2021-30632?

Public exploit code is available.

Is there a fix for CVE-2021-30632?

Fixed versions are available, including Chrome 93.0.4577.82, chromedriver 93.0.4577.82-1.1, chromedriver 93.0.4577.82-bp153.2.28.1.

How urgently should CVE-2021-30632 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2021-30632

HighExploitedPublic exploit

Out of bounds write in V8 in Google Chrome prior to 93.0.4577.82 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Published Dec 15, 2021 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2021-30632, UBUNTU-CVE-2021-30632

Key Facts

Patch immediately

CVE-2021-30632 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Chrome (Google), Fedora (Fedoraproject), chromium (arch) and 8 more products.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 8, 2021. Public exploit code is available.
EPSS estimates a 63% probability of exploitation in the next 30 days.
Fixed versions are available, including Chrome 93.0.4577.82, chromedriver 93.0.4577.82-1.1, chromedriver 93.0.4577.82-bp153.2.28.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

8.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

63%

Higher than 99.1% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2021-30632 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Out of bounds write in V8 in Google Chrome prior to 93.0.4577.82 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Nov 3, 2021	Nov 17, 2021	Not reported
Industry KEV feed	Sep 8, 2021	Nov 17, 2021	Not reported
CIRCL KEV	Nov 3, 2021	Nov 17, 2021	Not reported
ENISA EUVD	Nov 3, 2021	n/a	Not reported

Required action: Apply updates per vendor instructions.

Affected Products

49 affected entries in total

Product	Affected versions	Fixed in
ChromeGoogle	>= unspecified	93.0.4577.82
FedoraFedoraproject	33, 35	n/a
chromiumarch	See advisory	93.0.4577.82-1
operaarch	See advisory	79.0.4143.50-1
vivaldiarch	See advisory	4.2.2406.44-1

6 more affected products in the full CVE brief

Patched Releases

Chrome

93.0.4577.82

chromedriver

93.0.4577.82-1.1, 93.0.4577.82-bp153.2.28.1, 93.0.4577.82-lp152.2.125.1

chromium

93.0.4577.82-1, 93.0.4577.82-1.1, 93.0.4577.82-bp153.2.28.1, 93.0.4577.82-lp152.2.125.1, 93.0.4577.82-r0

chromium-browser

94.0.4606.71-0ubuntu0.18.04.1

nodejs-electron

13.5.0-1.1, 16.0.9-bp153.2.1

nodejs-electron-devel

16.0.9-bp153.2.1

opera

79.0.4143.50-1, 79.0.4143.50-lp153.2.21.1, 85.0.4341.28-lp154.2.5.1

ungoogled-chromium

113.0.5672.92-1.1

ungoogled-chromium-chromedriver

113.0.5672.92-1.1

vivaldi

4.2.2406.44-1

Timeline

Added to Industry KEV feed
Sep 8, 2021
Added to CISA KEV
Nov 3, 2021
Added to CIRCL KEV
Nov 3, 2021
Added to ENISA EUVD
Nov 3, 2021
Publicly disclosed
Dec 15, 2021
Last updated
Aug 4, 2026

Weakness Type

CWE-787 Out-of-bounds Write

References

advisoryhttp://packetstormsecurity.com/files/172845/Chrome-JIT-Compiler-Type-Confusion.html
advisoryhttps://bugzilla.suse.com/1027519
advisoryhttps://bugzilla.suse.com/1185376
advisoryhttps://bugzilla.suse.com/1187416
advisoryhttps://bugzilla.suse.com/1189632

15 more references in the full CVE brief

FAQ

Common Questions.

Out of bounds write in V8 in Google Chrome prior to 93.0.4577.82 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Affected: Chrome (Google) versions >= unspecified; Fedora (Fedoraproject) versions 33, 35; chromium (arch), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Sep 8, 2021.
Yes. It was added on Nov 3, 2021 with a federal remediation due date of Nov 17, 2021.
Public exploit code is available.
Fixed versions are available, including Chrome 93.0.4577.82, chromedriver 93.0.4577.82-1.1, chromedriver 93.0.4577.82-bp153.2.28.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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