CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 7.5. It affects Firefox.
CVE
CVE-2020-6821
Severity
HIGH
CVSS
7.5
EPSS
1.47%
Firefox
Original NVD Description
When reading from areas partially or fully outside the source resource with WebGL's <code>copyTexSubImage</code> method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.
Related CVEs
Other vulnerabilities affecting the same vendor(s)