What is CVE-2020-6870?

CVE-2020-6870 is a high-severity vulnerability in ZTE Netnumen U31 R10. CVSS score: 8.0/10. Published 2020-06-24.

How severe is CVE-2020-6870?

High severity. CVSS v3 base score is 8.0 out of 10.

Vulnerability in ZTE Netnumen U31 R10

CVE-2020-6870

The version V12.17.20T115 of ZTE U31R20 product is impacted by a design error vulnerability. An attacker could exploit the vulnerability to log in to the FTP server to tamper with the password, and illegally download, modify, upload, or delete files, causing improper operation of the network management system and equipment. This affects: NetNumenU31R20 V12.17.20T115

Published 2020-06-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (47.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.5% 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 Netnumen U31 R10
ZTE Netnumen U31 R10 Firmware — versions v12.17.20t115
ZTE Netnumenu31r20 — versions V12.17.20T115

References

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

Frequently asked questions

What is CVE-2020-6870?: CVE-2020-6870 is a high-severity vulnerability in ZTE Netnumen U31 R10. CVSS score: 8.0/10. Published 2020-06-24.
How severe is CVE-2020-6870?: High severity. CVSS v3 base score is 8.0 out of 10.