XSS in Kaiostech Kaios

CVE-2019-14758

An issue was discovered in KaiOS 2.5 and 2.5.1. The pre-installed File Manager application is vulnerable to HTML and JavaScript injection attacks. An attacker can send a file via email to the victim that will inject HTML into the File Manager application (assuming the victim chooses to download the email attachment). At a bare minimum, this allows an attacker to take control over the File Manager application's UI (e.g., display a malicious prompt to the user asking them to re-enter credentials such as their KaiOS credentials to continue using the application) and also allows an attacker to abuse any of the privileges available to the mobile application.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.008 (54.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2019-14758?
CVE-2019-14758 is a medium-severity vulnerability in Kaiostech Kaios, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-09-14.
How severe is CVE-2019-14758?
Medium severity. CVSS v3 base score is 6.1 out of 10.