CVE-2019-10741
CVE-2019-10741 is a medium-severity vulnerability in K-9 Mail Project K-9 Mail with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-254.
Key facts
- Severity: Medium (CVSS 3.x base score 4.3)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (56th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-254
- Affected product: K-9 Mail Project K-9 Mail
- Published:
- Last modified:
Description
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."
Frequently asked questions
- What is 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."
- How severe is CVE-2019-10741?
- CVE-2019-10741 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
- Is CVE-2019-10741 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-10741?
- CVE-2019-10741 affects K-9 Mail Project K-9 Mail. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-10741?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2019-10741 published?
- CVE-2019-10741 was published on 2019-04-07 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:k-9_mail_project:k-9_mail:5.600:*:*:*:*:android:*:*
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