Description
Insufficient validation of untrusted input in V8 in Google Chrome prior to 89.0.4389.128 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Chrome | unspecified – < 89.0.4389.128 | 89.0.4389.128 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | chromium | 90.0.4430.72-1 | — |
| Debian 13 | chromium | 90.0.4430.72-1 | — |
| Debian 12 | chromium | 90.0.4430.72-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | chromium-browser | 90.0.4430.72-0ubuntu0.18.04.1 | — |
| Ubuntu 16.04 LTS | chromium-browser | 90.0.4430.72-0ubuntu0.16.04.1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP2 | chromium | 89.0.4389.128-bp152.2.71.1 | openSUSE-SU-2021:0575-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | chromium | 93.0.4577.82-1.1 | openSUSE-SU-2024:12948-1, openSUSE-SU-2024:10681-1 |
| openSUSE Leap 15.2 | chromium | 89.0.4389.128-lp152.2.86.1 | openSUSE-SU-2021:0567-1 |
| openSUSE Leap 15.2 | opera | 76.0.4017.94-lp152.2.43.1 | openSUSE-SU-2021:0712-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | chromium | 89.0.4389.128-r0 | — |
| Alpine v3.23 | chromium | 89.0.4389.128-r0 | — |
| Alpine v3.23 | qt5-qtwebengine | 5.15.3_git20210510-r0 | — |
| Alpine v3.22 | chromium | 89.0.4389.128-r0 | — |
| Alpine v3.22 | qt5-qtwebengine | 5.15.3_git20210510-r0 | — |
| Alpine v3.21 | chromium | 89.0.4389.128-r0 | — |
| Alpine v3.21 | qt5-qtwebengine | 5.15.3_git20210510-r0 | — |
| Alpine v3.20 | chromium | 89.0.4389.128-r0 | — |
| Alpine v3.20 | qt5-qtwebengine | 5.15.3_git20210510-r0 | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | chromium | 89.0.4389.128-r0 | — |
| Alpine v3.19 | qt5-qtwebengine | 5.15.3_git20210510-r0 | — |
| Alpine v3.18 | chromium | 89.0.4389.128-r0 | — |
| Alpine v3.18 | qt5-qtwebengine | 5.15.3_git20210510-r0 | — |
| Alpine v3.17 | chromium | 89.0.4389.128-r0 | — |
| Alpine v3.17 | qt5-qtwebengine | 5.15.3_git20210510-r0 | — |
| Alpine v3.16 | chromium | 89.0.4389.128-r0 | — |
| Alpine v3.16 | qt5-qtwebengine | 5.15.3_git20210510-r0 | — |
| Alpine v3.15 | chromium | 89.0.4389.128-r0 | — |
| Alpine v3.15 | qt5-qtwebengine | 5.15.3_git20210510-r0 | — |
| Alpine v3.14 | chromium | 89.0.4389.128-r0 | — |
| Alpine v3.14 | qt5-qtwebengine | 5.15.3_git20210510-r0 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 1 module
-
Google Chrome versions before 89.0.4389.128 V8 XOR Typer Out-Of-Bounds Access RCE
exploit/multi/browser/chrome_cve_2021_21220_v8_insufficient_validation
GitHub 4 repositories
-
AmesianX/CVE-2021-21220 ★ 1 · Sep 26, 2021
-
borahll/CVE-2021-21220 ★ 0 · May 7, 2026
-
JacobTaylor3/C2-and-Post-Exploitation-Framework ★ 0 · Apr 1, 2026
CVE-2021-21220 Exploitation infrastructure
-
JacobTaylor3/CVE-2021-21220 ★ 0 · Mar 30, 2026
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 5
- openSUSE-SU-2021:0567-1 Security update for chromium SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0712-1 Security update for opera SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0575-1 Security update for chromium SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10681-1 chromedriver-93.0.4577.82-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12948-1 ungoogled-chromium-113.0.5672.92-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop.html
- https://crbug.com/1196683
- GLSA-202104-08 vendor-advisory
- http://packetstormsecurity.com/files/162437/Google-Chrome-XOR-Typer-Out-Of-Bounds-Access-Remote-Code-Execution.html
- FEDORA-2021-c3754414e7 vendor-advisory
- FEDORA-2021-ff893e12c5 vendor-advisory
- FEDORA-2021-35d2bb4627 vendor-advisory
- http://packetstormsecurity.com/files/176210/Chrome-V8-JIT-XOR-Arbitrary-Code-Execution.html