CVE-2020-6795

MEDIUM

Thunderbird < 68.5.0 - Null Pointer Dereference in S/MIME Signature Processing

Title source: llm
STIX 2.1

Description

When processing a message that contains multiple S/MIME signatures, a bug in the MIME processing code caused a null pointer dereference, leading to an unexploitable crash. This vulnerability affects Thunderbird < 68.5.

References (5)

Core 5
Core References
Permissions Required x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1611105
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202003-10
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4328-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4335-1/

Scores

CVSS v3 6.5
EPSS 0.0069
EPSS Percentile 71.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Details

CWE
CWE-476
Status published
Products (1)
mozilla/thunderbird < 68.5.0
Published Mar 02, 2020
Tracked Since Feb 18, 2026