CVE-2015-4640

What it is

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.

At a glance

Exploitability

Can be exploited from the same network segment without logging in. Limited direct impact.

Exploit odds

0.9% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2015-06-19 14:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 00:27 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.9% in the next 30 days (EPSS).
• Severity: 2.9 LOW (CVSS).
• Fix: none linked yet, which raises it.

Details

Published

2015-06-19 14:59 UTC

Last modified

2026-06-17 00:27 UTC

Exploit probability

0.9% · EPSS, next 30 days

Weakness

CWE-254

Record status

Modified

Affected

• Swiftkey Sdk

Attack profile CVSS 2.0 · 2.9

Attack vector

Adjacent network

Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2015-4640.md and follow it. Check whether this project is affected by CVE-2015-4640. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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