What’s Vulnerable › Vulnerabilities

CVE-2015-4640

• Severity: low (CVSS 2.9 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2015-06-19 · updated 2026-06-17
• Weakness: CWE-254

Description

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 Sdk: all versions

References

• http://arstechnica.com/security/2015/06/new-exploit-turns-samsung-galaxy-phones-into-remote-bugging-devices/
• http://www.kb.cert.org/vuls/id/155412
• http://www.securityfocus.com/bid/75347
• https://github.com/nowsecure/samsung-ime-rce-poc/
• https://www.nowsecure.com/blog/2015/06/16/remote-code-execution-as-system-user-on-samsung-phones/
• https://www.nowsecure.com/keyboard-vulnerability/
• http://arstechnica.com/security/2015/06/new-exploit-turns-samsung-galaxy-phones-into-remote-bugging-devices/
• http://www.kb.cert.org/vuls/id/155412
• http://www.securityfocus.com/bid/75347
• https://github.com/nowsecure/samsung-ime-rce-poc/
• https://www.nowsecure.com/blog/2015/06/16/remote-code-execution-as-system-user-on-samsung-phones/
• https://www.nowsecure.com/keyboard-vulnerability/

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