CVE-2019-14657
CVE-2019-14657 is a high-severity vulnerability in Yeahlink Vp59 Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 9.0
- EPSS exploit prediction: 4% (89th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-22
- Affected product: Yeahlink Vp59 Firmware
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2019-14657?
- 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.
- How severe is CVE-2019-14657?
- CVE-2019-14657 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2019-14657 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-14657?
- CVE-2019-14657 primarily affects Yeahlink Vp59 Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2019-14657?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2019-14657 published?
- CVE-2019-14657 was published on 2019-10-08 and last updated on 2026-06-17.
References
Affected products (3)
- cpe:2.3:o:yeahlink:vp59_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:yeahlink:t49g_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:yeahlink:t58v_firmware:*:*:*:*:*:*:*:*
More vulnerabilities in Yeahlink Vp59 Firmware
- CVE-2019-14656 — High (CVSS 8.8): Yealink phones through 2019-08-04 do not properly check user roles in POST requests. Consequently, the default User…
All CVEs affecting Yeahlink Vp59 Firmware →
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