What is CVE-2021-27479?

CVE-2021-27479 is a medium-severity vulnerability in Zoll Defibrillator Dashboard, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-06-16.

How severe is CVE-2021-27479?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Zoll Defibrillator Dashboard

CVE-2021-27479

ZOLL Defibrillator Dashboard, v prior to 2.2,The affected product’s web application could allow a low privilege user to inject parameters to contain malicious scripts to be executed by higher privilege users.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-06-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (43.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Zoll Defibrillator Dashboard
Zoll Defibrillator Dashboard — versions All versions prior to 2.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

us-cert.cisa.gov/ics/advisories/icsma-21-161-01 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2021-27479?: CVE-2021-27479 is a medium-severity vulnerability in Zoll Defibrillator Dashboard, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-06-16.
How severe is CVE-2021-27479?: Medium severity. CVSS v3 base score is 5.4 out of 10.