CVE-2021-21212 Security feature bypass in Chrome

What is CVE-2021-21212?

CVE-2021-21212 is a medium-severity vulnerability in Debian Debian Linux, published on 26 Apr 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Incorrect security UI in Network Config UI in Google Chrome on ChromeOS prior to 90.0.4430.72 allowed a remote attacker to potentially compromise WiFi connection security via a malicious WAP.

Which versions are affected by CVE-2021-21212?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Google Chrome.

How do I fix CVE-2021-21212?

Upgrade to a fixed version.

Is CVE-2021-21212 being exploited?

There is no known exploitation of CVE-2021-21212 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as CLEANSTART-2024-UG97969, DEBIAN-CVE-2021-21212, GHSA-h3gg-p3fw-jf9r, UBUNTU-CVE-2021-21212.