CVE-2015-4640

Name: CVE-2015-4640
Creator: NVD / NIST
Published: 2015-06-19T14:59:01.347+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.95%

Last modified Jun 17, 2026

CVE-2015-4640 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.95% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

0.95%

56.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-254

Affected Software

Vendor	Product	Versions
Swiftkey	Swiftkey Sdk	All versions

References

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

Timeline

Published: Jun 19, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-4640?

How severe is CVE-2015-4640?

Severity scoring for CVE-2015-4640 is pending analysis. The EPSS model estimates a 0.95% probability of exploitation in the next 30 days.

How do I fix CVE-2015-4640?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-4640?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST