CVE-2021-21206: Google Chromium Blink Use-After-Free Vulnerability

CISA Known Exploited Vulnerability (KEV)

Description

Google Chromium Blink contains a use-after-free vulnerability that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

Required action (CISA)

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2021-21206

Weakness behind it

CISA records this vulnerability as an instance of CWE-416. From there the chain continues into CAPEC attack patterns and ATT&CK techniques, all inside this corpus.

References

• NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-21206
• KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog