CVE-2021-27658Network attack vector

Authenticated malicious requests via unneutralized web output

Published Jun 24, 2021 · Updated Sep 17, 2024

Cross-site scripting in exacqVision Enterprise Manager 20.12 and earlier allows remote authenticated users to send malicious requests. A web page fails to validate, filter, escape, or encode user-controlled input before inserting it into output served to other users. Access requires an authenticated Enterprise Manager account; Johnson Controls has not identified the affected page or input field, and exploitation acts with a victim user's web session.

CVSS severity4.3
Medium
EPSS probability0.89%
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 exacqVision Enterprise Manager 20.12 and earlier allows remote authenticated users to send malicious requests. A web page fails to validate, filter, escape, or encode user-controlled input before inserting it into output served to other users. Access requires an authenticated Enterprise Manager account; Johnson Controls has not identified the affected page or input field, and exploitation acts with a victim user's web session.

The record

CVE
CVE-2021-27658
Published
Jun 24, 2021
Updated
Sep 17, 2024
Vendor
Johnson Controls
Product
exacqVision Enterprise Manager
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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 up to and including 20.12 <=20.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Johnson Controls · exacqVision Enterprise Managerversion=All versions up to and including 20.12 <=20.12

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
4.3Johnson ControlsCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/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')
T1203Exploitation for Client Execution

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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