CVE-2021-27479Network attack vector

Privileged-session script execution via unneutralized parameters

Published Jun 16, 2021 · Updated Aug 3, 2024

Cross-site scripting in ZOLL Defibrillator Dashboard before 2.2 allows remote authenticated users to execute scripts in privileged users' browsers. The web application accepts script-bearing parameter values without neutralization and executes them in a higher-privilege user's browser. A low-privilege account is required, and browser-context execution can read or modify data available to the privileged session.

CVSS severity5.4
Medium
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in ZOLL Defibrillator Dashboard before 2.2 allows remote authenticated users to execute scripts in privileged users' browsers. The web application accepts script-bearing parameter values without neutralization and executes them in a higher-privilege user's browser. A low-privilege account is required, and browser-context execution can read or modify data available to the privileged session.

The record

CVE
CVE-2021-27479
Published
Jun 16, 2021
Updated
Aug 3, 2024
Vendor
ZOLL Medical Corporation
Product
Defibrillator Dashboard
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 16, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions prior to 2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ZOLL Medical Corporation · Defibrillator Dashboardversion=All versions prior to 2.2

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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