What is CVE-2018-7539?

CVE-2018-7539 is a critical-severity vulnerability in Appeartv Xc5000, classified under Path Traversal. CVSS score: 9.8/10. Published 2018-04-17.

How severe is CVE-2018-7539?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Path Traversal in Appeartv Xc5000

CVE-2018-7539

On Appear TV XC5000 and XC5100 devices with firmware 3.26.217, it is possible to read OS files with a specially crafted HTTP request (such as GET /../../../../../../../../../../../../etc/passwd) to the web server (fuzzd/0.1.1) running the Maintenance Center on port TCP/8088. This can lead to full compromise of the device.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2018-04-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.041 (90.5th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.042 · newest: 0.041 · change: -0.001

Affected products

Appeartv Xc5000
Appeartv Xc5000 Firmware — versions 3.26.217
Appeartv Xc5100
Appeartv Xc5100 Firmware — versions 3.26.217

Weakness classification (CWE)

CWE-22 — Path Traversal

References

seclists.org/fulldisclosure/2018/Apr/34 (mailing-list, Exploit, Mailing List, Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2018-7539?: CVE-2018-7539 is a critical-severity vulnerability in Appeartv Xc5000, classified under Path Traversal. CVSS score: 9.8/10. Published 2018-04-17.
How severe is CVE-2018-7539?: Critical severity. CVSS v3 base score is 9.8 out of 10.