cve.bz

CVE-2020-12397

4.3 mediumEPSS 0.6%

Medium (4.3). EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

4.3 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS
0.6% chance of exploitation in the next 30 days; higher than 49% of CVEs (scores of 2026-10-31)
CWE
CWE-346
Published
Modified
Record from
the NVD, synced

Affected

References

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