Vulnerability Details CVE-2019-10741
K-9 Mail v5.600 can include the original quoted HTML code of a specially crafted, benign looking, email within (digitally signed) reply messages. The quoted part can contain conditional statements that show completely different text if opened in a different email client. This can be abused by an attacker to obtain valid S/MIME or PGP signatures for arbitrary content to be displayed to a third party. NOTE: the vendor states "We don't plan to take any action because of this."
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 48.4%
CVSS Severity
CVSS v3 Score 4.3
CVSS v2 Score 4.3
Products affected by CVE-2019-10741
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cpe:2.3:a:k-9_mail_project:k-9_mail:5.600