What is CVE-2018-20512?

CVE-2018-20512 is a critical-severity vulnerability in Cdatatec Epon Cpe-Wifi Devices Firmware, classified under Reliance on Cookies without Validation and Integrity Checking. CVSS score: 9.8/10. Published 2019-01-03.

How severe is CVE-2018-20512?

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

Vulnerability in Cdatatec Epon Cpe-Wifi Devices Firmware

CVE-2018-20512

EPON CPE-WiFi devices 2.0.4-X000 are vulnerable to escalation of privileges by sending cooLogin=1, cooUser=admin, and timestamp=-1 cookies.

Published 2019-01-03 · 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: 0.018 (77.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

Cdatatec Epon Cpe-Wifi Devices Firmware — versions 2.0.4-x000
Cdatatec Fd108bn
Cdatatec Fd111hz
Cdatatec Fd111y
Cdatatec Fd114y
Cdatatec Fd212gw
Cdatatec Fd212h
Cdatatec Fd214gh
Cdatatec Fd214gw
Cdatatec Fd404gh

Weakness classification (CWE)

CWE-565 — Reliance on Cookies without Validation and Integrity Checking

References

www.reddit.com/r/networking/comments/abu4kq/vulnerability_in_cdata_technologies… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-20512?: CVE-2018-20512 is a critical-severity vulnerability in Cdatatec Epon Cpe-Wifi Devices Firmware, classified under Reliance on Cookies without Validation and Integrity Checking. CVSS score: 9.8/10. Published 2019-01-03.
How severe is CVE-2018-20512?: Critical severity. CVSS v3 base score is 9.8 out of 10.