By encoding Unicode whitespace characters within the From email header, an attacker can spoof the sender email address that Thunderbird displays. This vulnerability affects Thunderbird < 68.8.0.
Published 2020-05-22 19:15:16
Updated 2023-02-28 15:15:07
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2020-12397

0.10%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 41 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-12397

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
MEDIUM AV:N/AC:M/Au:N/C:N/I:P/A:N
8.6
2.9
NIST
4.3
MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
2.8
1.4
NIST

CWE ids for CVE-2020-12397

  • The product does not properly verify that the source of data or communication is valid.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-12397

Products affected by CVE-2020-12397

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