CVE-2021-30554
Google Chromium WebGL Use-After-Free Vulnerability
Published Jul 2, 2021 · updated Jun 16, 2026 · google chrome
Google Chromium WebGL 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.
Timeline
Detection, updates, and resolution for this record.
Jul 2, 2021 · Catalog
Detected
Google Chromium WebGL 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.
Nov 3, 2021 · CISA KEV
Known exploited
Apply updates per vendor instructions.
Nov 17, 2021 · CISA KEV
Remediation due
Apply updates per vendor instructions.
Jun 16, 2026 · Catalog
Updated
Google Chromium WebGL 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
Apply updates per vendor instructions.
CISA due date Nov 17, 2021
Affected
- cpe fedoraproject/fedora33
- cpe fedoraproject/fedora34
- cpe google/chromeversion unspecified
- vendor Google Chromium WebGLversion unspecified
Sources
- CISA KEVCVE-2021-30554
Google Chromium WebGL 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.
cisa.gov - CVE.orgCVE-2021-30554
Official CVE identifier
cve.org - FIRST EPSSCVE-2021-30554
30-day exploitation probability 7.4%
first.org - NIST NVDCVE-2021-30554
Use after free in WebGL in Google Chrome prior to 91.0.4472.114 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
nvd.nist.gov