What is CVE-2021-39285?

CVE-2021-39285 is a medium-severity vulnerability in Versa-Networks Versa Director, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-09-07.

How severe is CVE-2021-39285?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Versa-Networks Versa Director

CVE-2021-39285

A XSS vulnerability exists in Versa Director Release: 16.1R2 Build: S8. An attacker can use the administration web interface URL to create a XSS based attack.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-09-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (54.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Versa-Networks Versa Director — versions 16.1r2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

versa-networks.com (Vendor Advisory)
github.com/pbgt/CVEs/blob/main/CVE-2021-39285.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-39285?: CVE-2021-39285 is a medium-severity vulnerability in Versa-Networks Versa Director, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-09-07.
How severe is CVE-2021-39285?: Medium severity. CVSS v3 base score is 6.1 out of 10.