# CVE-2021-21220: Chromium: CVE-2021-21220 Insufficient validation of untrusted input in V8 for x86_64

CVE-2021-21220 is fixed in 5 products on 1 platform, first by chromium-browser 90.0.4430.72-0ubuntu0.18.04.1, released April 26, 2021. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/cve/CVE-2021-21220
- Priority: Patch now
- CVSS: n/a (Medium)
- EPSS: 0.7044
- CISA KEV: listed Nov 3, 2021, federal due date Nov 17, 2021
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 14, 2021
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-21220

## Description

<p>This CVE was assigned by Chrome.  Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see <a href="https://chromereleases.googleblog.com/2021">Google Chrome Releases</a> for more information.</p> <p>Microsoft is aware of reports that exploits for CVE-2021-21220 exist in the wild.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | chromium-browser Ubuntu 18.04.6 LTS (bionic) | 90.0.4430.72-0ubuntu0.18.04.1 | [chromium-browser 90.0.4430.72-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-browser-90.0.4430.72-0ubuntu0.18.04.1.md) | Apr 26, 2021 |
| Linux | chromium-browser-l10n Ubuntu 18.04.6 LTS (bionic) | 90.0.4430.72-0ubuntu0.18.04.1 | [chromium-browser-l10n 90.0.4430.72-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-browser-l10n-90.0.4430.72-0ubuntu0.18.04.1.md) | Apr 26, 2021 |
| Linux | chromium-chromedriver Ubuntu 18.04.6 LTS (bionic) | 90.0.4430.72-0ubuntu0.18.04.1 | [chromium-chromedriver 90.0.4430.72-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-chromedriver-90.0.4430.72-0ubuntu0.18.04.1.md) | Apr 26, 2021 |
| Linux | chromium-codecs-ffmpeg Ubuntu 18.04.6 LTS (bionic) | 90.0.4430.72-0ubuntu0.18.04.1 | [chromium-codecs-ffmpeg 90.0.4430.72-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-codecs-ffmpeg-90.0.4430.72-0ubuntu0.18.04.1.md) | Apr 26, 2021 |
| Linux | chromium-codecs-ffmpeg-extra Ubuntu 18.04.6 LTS (bionic) | 90.0.4430.72-0ubuntu0.18.04.1 | [chromium-codecs-ffmpeg-extra 90.0.4430.72-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-codecs-ffmpeg-extra-90.0.4430.72-0ubuntu0.18.04.1.md) | Apr 26, 2021 |

---

Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.