CVE-2015-4640: Swiftkey SDK

Low severity, CVSS 2.9. EPSS: 0.9% chance of exploitation in the next 30 days.

The SwiftKey language-pack update implementation on Samsung Galaxy S4, S4 Mini, S5, and S6 devices relies on an HTTP connection to the skslm.swiftkey.net server, which allows man-in-the-middle attackers to write to language-pack files by modifying an HTTP response. NOTE: CVE-2015-4640 exploitation can be combined with CVE-2015-4641 exploitation for man-in-the-middle code execution.

Affected products

• Swiftkey Swiftkey SDK: any version

Published 2015-06-19. Last modified 2026-06-17.