CVE-2018-20512

CRITICALNVD 9.8

9.8

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

CVSS v3: 9.8
EG Score: —
EPSS: 72.6%
KEV: Not listed

Published

January 3, 2019

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://www.reddit.com/r/networking/comments/abu4kq/vulnerability_in_cdata_technologies_epon_cpewifi/
af854a3a-2127-422b-91ae-364da2661108https://www.reddit.com/r/networking/comments/abu4kq/vulnerability_in_cdata_technologies_epon_cpewifi/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-565Reliance on Cookies without Validation and Integrity Checking

Data Freshness Timeline

(refreshed 6× in last 7d / 6× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2018-20512?

CVE-2018-20512 is a critical vulnerability published on January 3, 2019. EPON CPE-WiFi devices 2.0.4-X000 are vulnerable to escalation of privileges by sending cooLogin=1, cooUser=admin, and timestamp=-1 cookies.

When was CVE-2018-20512 disclosed?

CVE-2018-20512 was first published in the National Vulnerability Database on January 3, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-20512 actively exploited?

CVE-2018-20512 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 72.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-20512?

CVE-2018-20512 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2018-20512?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-20512, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2018-20512

📅 Published

🔄 Last Modified

🔗 References (2)