What is CVE-2020-6863?

CVE-2020-6863 is a medium-severity vulnerability in ZTE E8820v3. CVSS score: 6.5/10. Published 2020-02-27.

How severe is CVE-2020-6863?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in ZTE E8820v3

CVE-2020-6863

ZTE E8820V3 router product is impacted by a permission and access control vulnerability. Attackers could use this vulnerability to tamper with DDNS parameters and send DoS attacks on the specified URL.

Published 2020-02-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.006 (45.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

ZTE E8820v3
ZTE E8820v3 Firmware
ZTE Corporation E8820v3 — versions All versions up to V3.1.0.1000.4

References

support.zte.com.cn/support/news/LoopholeInfoDetail.aspx (Vendor Advisory)

Frequently asked questions

What is CVE-2020-6863?: CVE-2020-6863 is a medium-severity vulnerability in ZTE E8820v3. CVSS score: 6.5/10. Published 2020-02-27.
How severe is CVE-2020-6863?: Medium severity. CVSS v3 base score is 6.5 out of 10.