What is CVE-2020-8090?

CVE-2020-8090 is a medium-severity vulnerability in A1 Wlan Box Adb Vv2220, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2020-01-27.

How severe is CVE-2020-8090?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in A1 Wlan Box Adb Vv2220

CVE-2020-8090

The Username field in the Storage Service settings of A1 WLAN Box ADB VV2220v2 devices allows stored XSS (after a successful Administrator login).

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-01-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (48.1th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.1% 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

A1 Wlan Box Adb Vv2220 — versions 2
A1 Wlan Box Adb Vv2220 Firmware

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

sku11army.blogspot.com/2020/01/a1-modem-wlan-box-adb-vv2220.html (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-8090?: CVE-2020-8090 is a medium-severity vulnerability in A1 Wlan Box Adb Vv2220, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2020-01-27.
How severe is CVE-2020-8090?: Medium severity. CVSS v3 base score is 4.8 out of 10.