7.5
CWE
908
Advisory Published
CVE Published
Updated

CVE-2020-6821

First published: Tue Apr 07 2020(Updated: )

Last updated 24 July 2024

Credit: security@mozilla.org security@mozilla.org

Affected SoftwareAffected VersionHow to fix
Mozilla Thunderbird<68.7
68.7
Mozilla Firefox ESR<68.7
68.7
Mozilla Firefox<75
75
Mozilla Firefox<75.0
Mozilla Firefox ESR<68.7.0
Mozilla Thunderbird<68.7.0
debian/firefox
132.0.2-1
debian/firefox-esr
115.14.0esr-1~deb11u1
128.4.0esr-1~deb11u1
128.3.1esr-1~deb12u1
128.4.0esr-1~deb12u1
128.4.0esr-1
debian/thunderbird
1:115.12.0-1~deb11u1
1:128.4.3esr-1~deb11u1
1:115.16.0esr-1~deb12u1
1:128.4.3esr-1~deb12u1
1:128.4.3esr-1

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2020-6821?

    CVE-2020-6821 is a vulnerability in Mozilla Firefox and Thunderbird that allows potential sensitive data disclosure when reading from areas outside the source resource with WebGL's copyTexSubImage method.

  • Which software is affected by CVE-2020-6821?

    Mozilla Firefox (up to version 75.0), Mozilla Firefox ESR (up to version 68.7.0), and Mozilla Thunderbird (up to version 68.7.0) are affected by CVE-2020-6821.

  • How severe is CVE-2020-6821?

    CVE-2020-6821 has a severity rating of high.

  • How can I fix CVE-2020-6821?

    Update your Mozilla Firefox or Thunderbird to the latest version available to mitigate CVE-2020-6821.

  • Where can I find more information about CVE-2020-6821?

    You can find more information about CVE-2020-6821 on Mozilla's security advisories and the MITRE CVE database.

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