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Vulnerability record · CVE-2021-27656 · published 18 March 2021

CVE-2021-27656: Johnsoncontrols exacqvision web service missing authorization vulnerability

Johnsoncontrols · Exacqvision Web Service

A vulnerability in exacqVision Web Service 20.12.2.0 and prior could allow an unauthenticated attacker to view system-level information about the exacqVision Web Service and the operating system.

7.5 CVSS 3.1 High EPSS 1.2% · top 33.0% CWE-862 · Missing authorization
7.5CVSS 3.1 base score, v2 5.0
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

A vulnerability in exacqVision Web Service 20.12.2.0 and prior could allow an unauthenticated attacker to view system-level information about the exacqVision Web Service and the operating system.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://us-cert.cisa.gov/ics/advisories/icsa-21-077-01 Third Party AdvisoryUS Government Resource
https://www.johnsoncontrols.com/cyber-solutions/security-advisories PatchVendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-077-01 Third Party AdvisoryUS Government Resource
https://www.johnsoncontrols.com/cyber-solutions/security-advisories PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-27664Johnsoncontrols exacqvision web service improper privilege management vulnerabilityUnder certain configurations an unauthenticated remote user could be given access to credentials stored in the exacqVision Server.EPSS 1.6%8.8CVE-2024-32863Johnsoncontrols exacqvision web service cross-site request forgery vulnerabilityUnder certain circumstances the exacqVision Web Services may be susceptible to Cross-Site Request Forgery (CSRF)EPSS 0.20%8.1CVE-2024-32862Johnsoncontrols exacqvision web service vulnerabilityUnder certain circumstances the ExacqVision Web Services does not provide sufficient protection from untrusted domains.EPSS 0.43%8.1CVE-2024-32864Johnsoncontrols exacqvision web service cleartext transmission vulnerabilityUnder certain circumstances exacqVision Web Services will not enforce secure web communications (HTTPS)EPSS 0.22%7.2CVE-2020-9047Johnsoncontrols exacqvision enterprise manager improper verification of cryptographic signature vulnerabilityA vulnerability exists that could allow the execution of unauthorized code or operating system commands on systems running exacqVision Web Service ve…EPSS 7.8%6.1CVE-2021-27659Johnsoncontrols exacqvision web service cross-site scripting vulnerabilityexacqVision Web Service 21.03 does not sufficiently validate, filter, escape, and/or encode user-controllable input before it is placed in output tha…EPSS 1.2%5.7CVE-2024-32931Johnsoncontrols exacqvision web service vulnerabilityUnder certain circumstances the exacqVision Web Service can expose authentication token details within communications.EPSS 0.38%9.9CVE-2026-84869ScreenConnect client allows unauthorized file transfer and execution in remote sessionsA flaw in the ConnectWise ScreenConnect client lets files be transferred and executed inside an active remote session without authorization or Host c…KEVEPSS 0.92%analysed

Source: NIST National Vulnerability Database (record CVE-2021-27656), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.