CVE-2021-21144

CVE-2021-21144 is a high-severity heap buffer overflow vulnerability in Google Chrome's Tab Groups feature, affecting versions prior to 88.0.4324.146, as well as Fedora Project's Chrome and Fedora. An attacker could exploit this by convincing a user to install a malicious Chrome Extension, leading to heap corruption. With a CVSS score of 8.8, this vulnerability has a high impact on confidentiality, integrity, and availability, requiring user interaction but no prior privileges. There is no evidence of active exploitation, public exploit code, or Metasploit/Nuclei modules, though it has garnered some community discussion and media coverage.