The SwiftKey language-pack update implementation on Samsung Galaxy S4, S4 Mini, S5, and…
Priority LOW 16CWE-254Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · Partial · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.00945 61st percentileScored 2026-11-07
Public exploit Yes 4 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:swiftkey:swiftkey_sdk:*:*:*:*:*:*:*:* | all versions | Vulnerable | Swiftkey |
| cpe:2.3:h:samsung:galaxy_s4:*:*:*:*:*:*:*:* | all versions | Running on | Samsung |
| cpe:2.3:h:samsung:galaxy_s4_mini:*:*:*:*:*:*:*:* | all versions | Running on | Samsung |
| cpe:2.3:h:samsung:galaxy_s5:*:*:*:*:*:*:*:* | all versions | Running on | Samsung |
| cpe:2.3:h:samsung:galaxy_s6:*:*:*:*:*:*:*:* | all versions | Running on | Samsung |
- cpe:2.3:a:swiftkey:swiftkey_sdk:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Swiftkey
- cpe:2.3:h:samsung:galaxy_s4:*:*:*:*:*:*:*:* Versions all versions Running on ·Samsung
- cpe:2.3:h:samsung:galaxy_s4_mini:*:*:*:*:*:*:*:* Versions all versions Running on ·Samsung
- cpe:2.3:h:samsung:galaxy_s5:*:*:*:*:*:*:*:* Versions all versions Running on ·Samsung
- cpe:2.3:h:samsung:galaxy_s6:*:*:*:*:*:*:*:* Versions all versions Running on ·Samsung
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2015-4640
- 2026-10-03 Alias added: GHSA-vvp6-3cxw-w3p7
References
Exploit 4
- 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://arstechnica.com/security/2015/06/new-exploit-turns-samsung-galaxy-phones-into-remote-bugging-devices/
Advisory 1
More Swiftkey Sdk vulnerabilities
- TI-2015-03883 Directory traversal vulnerability in the SwiftKey language-pack update implementation on… CVSS 2.0MEDIUM 6.4
Sources
- CVE-2015-4640 · CVE Program
- CVE-2015-4640 · NVD
- FIRST EPSS
- GHSA-vvp6-3cxw-w3p7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences