What is CVE-2017-5256?

CVE-2017-5256 is a medium-severity vulnerability in Cambium Networks Epmp, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2017-12-20.

How severe is CVE-2017-5256?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Cambium Networks Epmp

CVE-2017-5256

In version 3.5 and prior of Cambium Networks ePMP firmware, all authenticated users have the ability to update the Device Name and System Description fields in the web administration console, and those fields are vulnerable to persistent cross-site scripting (XSS) injection.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2017-12-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (40.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Cambium Networks Epmp — versions 3.5 and prior
Cambiumnetworks Epmp 1000
Cambiumnetworks Epmp 1000 Firmware
Cambiumnetworks Epmp 2000
Cambiumnetworks Epmp 2000 Firmware

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

blog.rapid7.com/2017/12/19/r7-2017-25-cambium-epmp-and-cnpilot-multiple-vulnera… (Third Party Advisory)

Frequently asked questions

What is CVE-2017-5256?: CVE-2017-5256 is a medium-severity vulnerability in Cambium Networks Epmp, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2017-12-20.
How severe is CVE-2017-5256?: Medium severity. CVSS v3 base score is 5.4 out of 10.