CVE-2020-6821
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2020-6821
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-6821.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2020-6821
- Downstream
- Related
- Published
- 2020-04-24T16:15:13Z
- Modified
- 2025-08-09T20:01:27Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References