PatchTheCVECVE-2018-7539: On Appear TV XC5000 and XC5100 devices with firmware 3.26.217, it is possible to read OS files with a speciall
CVE-2018-7539 is a critical-severity flaw (CVSS 9.8) affecting xc5000 firmware, xc5100 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
- EPSS top 9%: very likely to be exploited
- Public exploit reference
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 4.1% (top 9%) |
| CISA exploited list | No |
| Weakness | CWE-22 |
| Published | 2018-04-17 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2018-7539?
xc5000 firmware: mitigate or apply the listed mitigation; xc5100 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2018-7539 being exploited?
CVE-2018-7539 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2018-7539 affect?
CVE-2018-7539 affects xc5000 firmware, xc5100 firmware. Severity is critical (CVSS 9.8). 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 M
How urgent is CVE-2018-7539?
Priority 67/100. Critical severity; EPSS top 9%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action