# CVE-2018-6121: chromium-browser: Insufficient validation of input in Blink in Google Chrome prior to 66.0.3359.170 allowed a remote attacker to perfor...

CVE-2018-6121 is fixed in 5 products on 1 platform, first by chromium-browser 66.0.3359.181-0ubuntu0.18.04.1, released November 2, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2018-6121
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0091
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 27, 2019

## Description

Insufficient validation of input in Blink in Google Chrome prior to 66.0.3359.170 allowed a remote attacker to perform privilege escalation via a crafted HTML page.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | chromium-browser Ubuntu 18.04.6 LTS (bionic) | 66.0.3359.181-0ubuntu0.18.04.1 | [chromium-browser 66.0.3359.181-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-browser-66.0.3359.181-0ubuntu0.18.04.1.md) | Nov 2, 2021 |
| Linux | chromium-browser-l10n Ubuntu 18.04.6 LTS (bionic) | 66.0.3359.181-0ubuntu0.18.04.1 | [chromium-browser-l10n 66.0.3359.181-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-browser-l10n-66.0.3359.181-0ubuntu0.18.04.1.md) | Nov 2, 2021 |
| Linux | chromium-chromedriver Ubuntu 18.04.6 LTS (bionic) | 66.0.3359.181-0ubuntu0.18.04.1 | [chromium-chromedriver 66.0.3359.181-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-chromedriver-66.0.3359.181-0ubuntu0.18.04.1.md) | Nov 2, 2021 |
| Linux | chromium-codecs-ffmpeg Ubuntu 18.04.6 LTS (bionic) | 66.0.3359.181-0ubuntu0.18.04.1 | [chromium-codecs-ffmpeg 66.0.3359.181-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-codecs-ffmpeg-66.0.3359.181-0ubuntu0.18.04.1.md) | Nov 2, 2021 |
| Linux | chromium-codecs-ffmpeg-extra Ubuntu 18.04.6 LTS (bionic) | 66.0.3359.181-0ubuntu0.18.04.1 | [chromium-codecs-ffmpeg-extra 66.0.3359.181-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-chromium-codecs-ffmpeg-extra-66.0.3359.181-0ubuntu0.18.04.1.md) | Nov 2, 2021 |

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Data as of 2026-11-07T18:46:35Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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