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CVE-2021-21222

Heap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker who...

6.5 MediumFix available

Heap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

1.75%Up 1.0 points since Apr 27, 2021
90%50%10%1%

What each source reports

NVD Score used 6.5

Heap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Record
CVE-2021-21222
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:P/I:N/A:N
Weakness
CWE-787
Updated
2026-11-02
CVE List No score

Heap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Record
CVE-2021-21222
Updated
2026-11-02
EUVDEUVD-2021-8613 No score

Heap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Record
EUVD-2021-8613
Updated
2026-11-03
GitHub AdvisoriesGHSA-hffr-mqmq-pqx2 No score

Heap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker who...

Heap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Record
GHSA-hffr-mqmq-pqx2
Weakness
CWE-787
Updated
2026-11-02
OSVALPINE-CVE-2021-21222 6.5

Heap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Record
ALPINE-CVE-2021-21222
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Updated
2026-11-03
OSV 6.5

Heap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Record
CVE-2021-21222
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Updated
2026-11-02
Show 6 moreShow less
OSVDEBIAN-CVE-2021-21222 6.5

Heap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Record
DEBIAN-CVE-2021-21222
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2021-21222 6.5

Heap buffer overflow in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Record
UBUNTU-CVE-2021-21222
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVopenSUSE-SU-2021:0629-1 No score

Security update for Chromium

This update for chromium fixes the following issues:

  • Chromium was updated to 90.0.4430.93 (boo#1184764,boo#1185047,boo#1185398)
    • CVE-2021-21227: Insufficient data validation in V8.
    • CVE-2021-21232: Use after free in Dev Tools.
    • CVE-2021-21233: Heap buffer overflow in ANGLE.
    • CVE-2021-21228: Insufficient policy enforcement in extensions.
    • CVE-2021-21229: Incorrect security UI in downloads.
    • CVE-2021-21230: Type Confusion in V8.
    • CVE-2021-21231: Insufficient data validation in V8.
    • CVE-2021-21222: Heap buffer overflow in V8
    • CVE-2021-21223: Integer overflow in Mojo
    • CVE-2021-21224: Type Confusion in V8
    • CVE-2021-21225: Out of bounds memory access in V8
    • CVE-2021-21226: Use after free in navigation
    • CVE-2021-21201: Use after free in permissions
    • CVE-2021-21202: Use after free in extensions
    • CVE-2021-21203: Use after free in Blink
    • CVE-2021-21204: Use after free in Blink
    • CVE-2021-21205: Insufficient policy enforcement in navigation
    • CVE-2021-21221: Insufficient validation of untrusted input in Mojo
    • CVE-2021-21207: Use after free in IndexedDB
    • CVE-2021-21208: Insufficient data validation in QR scanner
    • CVE-2021-21209: Inappropriate implementation in storage
    • CVE-2021-21210: Inappropriate implementation in Network
    • CVE-2021-21211: Inappropriate implementation in Navigatio
    • CVE-2021-21212: Incorrect security UI in Network Config UI
    • CVE-2021-21213: Use after free in WebMIDI
Record
openSUSE-SU-2021:0629-1
Updated
2026-11-02
OSVopenSUSE-SU-2021:0712-1 No score

Security update for opera

This update for opera fixes the following issues:

Update to version 76.0.4017.94

  • released on the stable branch

Update to version 76.0.4017.88

  • CHR-8404 Update chromium on desktop-stable-90-4017 to 90.0.4430.85

  • DNA-92219 Add bookmark API supports to the front-end

  • DNA-92409 [MAC] ‘Present now’ options windows appear behind detached window

  • DNA-92615 Capture tab from the tab context menu

  • DNA-92616 Capture tab from Snapshot

  • DNA-92617 Capture tab from image context menu

  • DNA-92652 Opera 76 translations

  • DNA-92680 Make image selector on any page work like bookmarks popup WP2

  • DNA-92707 Crash at void base::ObserverList::AddObserver(class content::PrerenderHost::Observer*)

  • DNA-92710 Autoupdate on macOS 11.3 not working

  • DNA-92711 Make image selector on any page work like bookmarks popup WP3

  • DNA-92730 Make image selector on any page work like bookmarks popup WP4

  • DNA-92761 Make image selector on any page work like bookmarks popup WP5

  • DNA-92776 Make image selector on any page work like bookmarks popup WP6

  • DNA-92862 Make “View pinboards” button work

  • DNA-92906 Provide in-house translations for Cashback strings to Spanish

  • DNA-92908 API collides with oneclick installer

  • The update to chromium 90.0.4430.85 fixes following issues:

    • CVE-2021-21222, CVE-2021-21223, CVE-2021-21224, CVE-2021-21225, CVE-2021-21226
  • Complete Opera 76.0 changelog at: https://blogs.opera.com/desktop/changelog-for-76/

Update to version 75.0.3969.218

  • CHR-8393 Update chromium on desktop-stable-89-3969 to 89.0.4389.128

  • DNA-92113 Windows debug fails to compile opera_components/ipfs/ipfs/ipfs_url_loader_throttle.obj

  • DNA-92198 [Arm] Update signing scripts

  • DNA-92200 [Arm] Create universal packages from two buildsets

  • DNA-92338 [Search tabs] The preview isn’t updated when the tab from another window is closed

  • DNA-92410 [Download popup] Selected item still looks bad in dark mode

  • DNA-92441 Compilation error

  • DNA-92514 Allow to generate universal DMG package from existing universal .tar.xz

  • DNA-92608 Opera 75 crash during rapid workspace switching

  • DNA-92627 Crash at automation::Error::code()

  • DNA-92630 Crash at opera::PremiumExtensionPersistentPrefStorageImpl::IsPremiumExtensionFeatureEnabled()

  • DNA-92648 Amazon icon disappears from Sidebar Extensions section after pressing Hide Amazon button

  • DNA-92681 Add missing string in Japanese

  • DNA-92684 Fix issues with signing multiple bsids

  • DNA-92706 Update repack generation from universal packages

  • DNA-92725 Enable IPFS for all channels

  • The update to chromium 89.0.4389.128 fixes following issues: CVE-2021-21206, CVE-2021-21220

Record
openSUSE-SU-2021:0712-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10681-1 No score

chromedriver-93.0.4577.82-1.1 on GA media

These are all security issues fixed in the chromedriver-93.0.4577.82-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10681-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:12948-1 No score

ungoogled-chromium-113.0.5672.92-1.1 on GA media

These are all security issues fixed in the ungoogled-chromium-113.0.5672.92-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:12948-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
qt5-qtwebengine
Alpine:v3.14
before 5.15.3_git20210510-r0
5.15.3_git20210510-r0
qt5-qtwebengine
Alpine:v3.15
before 5.15.3_git20210510-r0
5.15.3_git20210510-r0
qt5-qtwebengine
Alpine:v3.16
before 5.15.3_git20210510-r0
5.15.3_git20210510-r0
qt5-qtwebengine
Alpine:v3.17
before 5.15.3_git20210510-r0
5.15.3_git20210510-r0
qt5-qtwebengine
Alpine:v3.18
before 5.15.3_git20210510-r0
5.15.3_git20210510-r0
qt5-qtwebengine
Alpine:v3.19
before 5.15.3_git20210510-r0
5.15.3_git20210510-r0
qt5-qtwebengine
Alpine:v3.20
before 5.15.3_git20210510-r0
5.15.3_git20210510-r0
qt5-qtwebengine
Alpine:v3.21
before 5.15.3_git20210510-r0
5.15.3_git20210510-r0
qt5-qtwebengine
Alpine:v3.22
before 5.15.3_git20210510-r0
5.15.3_git20210510-r0
qt5-qtwebengine
Alpine:v3.23
before 5.15.3_git20210510-r0
5.15.3_git20210510-r0
Show 9 moreShow less
Affected packages
PackageAffectedFixed
chromium
Debian:12
before 90.0.4430.85-1
90.0.4430.85-1
chromium
Debian:13
before 90.0.4430.85-1
90.0.4430.85-1
chromium
Debian:14
before 90.0.4430.85-1
90.0.4430.85-1
chromium
Debian:10
From an advisory covering 25 CVEs
before 90.0.4430.85-1~deb10u1, plus listed versions
73.0.3683.75-174.0.3729.108-175.0.3770.10-175.0.3770.80-175.0.3770.90-1
Show 45 moreShow less
76.0.3809.100-176.0.3809.100-1~deb10u176.0.3809.62-176.0.3809.71-176.0.3809.87-176.0.3809.87-278.0.3904.108-178.0.3904.108-1~deb10u178.0.3904.87-178.0.3904.97-178.0.3904.97-1~deb10u179.0.3945.130-179.0.3945.130-1~deb10u179.0.3945.130-279.0.3945.56-179.0.3945.79-180.0.3987.106-180.0.3987.116-180.0.3987.122-180.0.3987.122-280.0.3987.132-180.0.3987.132-1~deb10u180.0.3987.149-180.0.3987.149-1~deb10u180.0.3987.162-180.0.3987.162-1~deb10u181.0.4044.62-181.0.4044.92-183.0.4103.106-183.0.4103.116-183.0.4103.116-1~deb10u183.0.4103.116-1~deb10u283.0.4103.116-1~deb10u383.0.4103.116-283.0.4103.116-383.0.4103.116-3.183.0.4103.83-184.0.4147.105-184.0.4147.89-187.0.4280.141-0.187.0.4280.141-0.1~deb10u187.0.4280.88-0.187.0.4280.88-0.287.0.4280.88-0.387.0.4280.88-0.4
90.0.4430.85-1~deb10u1
chromium-browser
Ubuntu:18.04:LTS
before 90.0.4430.93-0ubuntu0.18.04.1, plus listed versions
61.0.3163.100-0ubuntu1.137862.0.3202.62-0ubuntu0.17.10.138062.0.3202.89-0ubuntu1.138662.0.3202.94-0ubuntu1.138863.0.3239.84-0ubuntu1
Show 45 moreShow less
63.0.3239.108-0ubuntu164.0.3282.119-0ubuntu164.0.3282.140-0ubuntu164.0.3282.167-0ubuntu165.0.3325.146-0ubuntu165.0.3325.181-0ubuntu166.0.3359.139-0ubuntu0.18.04.366.0.3359.181-0ubuntu0.18.04.167.0.3396.99-0ubuntu0.18.04.168.0.3440.75-0ubuntu0.18.04.168.0.3440.106-0ubuntu0.18.04.169.0.3497.81-0ubuntu0.18.04.170.0.3538.67-0ubuntu0.18.04.170.0.3538.77-0ubuntu0.18.04.170.0.3538.110-0ubuntu0.18.04.171.0.3578.80-0ubuntu0.18.04.171.0.3578.98-0ubuntu0.18.04.172.0.3626.119-0ubuntu0.18.04.172.0.3626.121-0ubuntu0.18.04.173.0.3683.75-0ubuntu0.18.04.173.0.3683.86-0ubuntu0.18.04.174.0.3729.169-0ubuntu0.18.04.175.0.3770.90-0ubuntu0.18.04.175.0.3770.142-0ubuntu0.18.04.176.0.3809.87-0ubuntu0.18.04.176.0.3809.100-0ubuntu0.18.04.177.0.3865.90-0ubuntu0.18.04.178.0.3904.70-0ubuntu0.18.04.278.0.3904.97-0ubuntu0.18.04.178.0.3904.108-0ubuntu0.18.04.179.0.3945.79-0ubuntu0.18.04.179.0.3945.130-0ubuntu0.18.04.180.0.3987.87-0ubuntu0.18.04.180.0.3987.149-0ubuntu0.18.04.180.0.3987.163-0ubuntu0.18.04.181.0.4044.122-0ubuntu0.18.04.181.0.4044.138-0ubuntu0.18.04.183.0.4103.61-0ubuntu0.18.04.184.0.4147.105-0ubuntu0.18.04.185.0.4183.83-0ubuntu0.18.04.285.0.4183.121-0ubuntu0.18.04.186.0.4240.75-0ubuntu0.18.04.186.0.4240.198-0ubuntu0.18.04.187.0.4280.66-0ubuntu0.18.04.189.0.4389.82-0ubuntu0.18.04.1
90.0.4430.93-0ubuntu0.18.04.1
chromium
openSUSE:Leap 15.2
From an advisory covering 25 CVEs
before 90.0.4430.93-lp152.2.89.1
90.0.4430.93-lp152.2.89.1
opera
openSUSE:Leap 15.2 NonFree
From an advisory covering 7 CVEs
before 76.0.4017.94-lp152.2.43.1
76.0.4017.94-lp152.2.43.1
chromium
openSUSE:Tumbleweed
From an advisory covering 1081 CVEs
before 93.0.4577.82-1.1
93.0.4577.82-1.1
chromium
openSUSE:Tumbleweed
From an advisory covering 2310 CVEs
before 113.0.5672.92-1.1
113.0.5672.92-1.1

History

History
RecordedChangedSources
affected, facts
affected, aliases, referencesOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-21222 is a medium vulnerability (CVSS 6.5) in Google Chrome, published April 26, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.75%, the 78th percentile. Fixed in qt5-qtwebengine 5.15.3_git20210510-r0.

References

Show 194 moreShow less
This page doesn't list everything

Left out here: 16 versions and 2,131 references. The JSON record has them.

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