Yealink phones through 2019-08-04 have an issue with OpenVPN file upload.
Priority MEDIUM 44CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-434.
Summary
Yealink phones through 2019-08-04 have an issue with OpenVPN file upload. They execute tar as root to extract files, but do not validate the extraction directory. Creating a tar file with ../../../../ allows replacement of almost any file on a phone. This leads to password replacement and arbitrary code execution as root.
Why it matters now
EPSS 0.03735 89th percentileScored 2026-11-07
Public exploit Yes 2 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 · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:yeahlink:vp59_firmware:*:*:*:*:*:*:*:* | up to 2019-08-04 | Vulnerable | Yeahlink |
| cpe:2.3:h:yeahlink:vp59:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Yeahlink |
| cpe:2.3:o:yeahlink:t49g_firmware:*:*:*:*:*:*:*:* | up to 2019-08-04 | Vulnerable | Yeahlink |
| cpe:2.3:h:yeahlink:t49g:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Yeahlink |
| cpe:2.3:o:yeahlink:t58v_firmware:*:*:*:*:*:*:*:* | up to 2019-08-04 | Vulnerable | Yeahlink |
| cpe:2.3:h:yeahlink:t58v:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Yeahlink |
- cpe:2.3:o:yeahlink:vp59_firmware:*:*:*:*:*:*:*:* Versions up to 2019-08-04 Vulnerable ·Yeahlink
- cpe:2.3:h:yeahlink:vp59:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Yeahlink
- cpe:2.3:o:yeahlink:t49g_firmware:*:*:*:*:*:*:*:* Versions up to 2019-08-04 Vulnerable ·Yeahlink
- cpe:2.3:h:yeahlink:t49g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Yeahlink
- cpe:2.3:o:yeahlink:t58v_firmware:*:*:*:*:*:*:*:* Versions up to 2019-08-04 Vulnerable ·Yeahlink
- cpe:2.3:h:yeahlink:t58v:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Yeahlink
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-14657
- 2026-10-03 Alias added: GHSA-3hj6-89vp-w89r
References
More Yeahlink T49g Firmware vulnerabilities
- TI-2019-10888 Yealink phones through 2019-08-04 do not properly check user roles in POST requests. CVSS 3.1HIGH 8.8
Sources
- CVE-2019-14657 · CVE Program
- CVE-2019-14657 · NVD
- FIRST EPSS
- GHSA-3hj6-89vp-w89r · 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