What’s Vulnerable › Vulnerabilities

CVE-2020-6792

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-03-02 · updated 2026-06-17
• Weakness: CWE-908

Description

When deriving an identifier for an email message, uninitialized memory was used in addition to the message contents. This vulnerability affects Thunderbird < 68.5.

Affected products

• Canonical Ubuntu Linux: 16.04, 18.04, 19.10
• Mozilla Thunderbird: before 68.5.0 — fixed in 68.5.0

How to fix

Upgrade to a fixed version: Mozilla Thunderbird 68.5.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1609607
• https://security.gentoo.org/glsa/202003-10
• https://usn.ubuntu.com/4328-1/
• https://usn.ubuntu.com/4335-1/
• https://www.mozilla.org/security/advisories/mfsa2020-07/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1609607
• https://security.gentoo.org/glsa/202003-10
• https://usn.ubuntu.com/4328-1/
• https://usn.ubuntu.com/4335-1/
• https://www.mozilla.org/security/advisories/mfsa2020-07/

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