CVE-2021-27659

mediumpriority · track · 24EPSS 0.012 · 69 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.22% (69th) EPSS

CVSS 4.3 · medium

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

exacqVision Web Service 21.03 does not sufficiently validate, filter, escape, and/or encode user-controllable input before it is placed in output that is used as a web page that is served to other users.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedexacqVision Web Servicecisa_csaf_ot
Johnson Controls recommends upgrading all previous versions of exacqVision Web Service to v21.06
https://www.exacq.com/support/downloads.php
MitigationexacqVision Web Servicecisa_csaf_ot
Additional security notices and product security guidance can be found at the Johnson Control ICS Product Security page.
https://www.johnsoncontrols.com/cyber-solutions/security-advisories

cvss

Technical severity, 0–10. One row per scoring source.

6.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7

v3.05.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · CISA US

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · productsecurity@jci.comexploitability 3.9 · impact 1.4

v3.15.6mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-79US

affected products (4)

Products and version ranges known to be affected.

exacqVision Web Service: Version 21.03 and priorall versionscisa_csaf_otUS
Exacq Technologies, Johnson Controls Inc. exacqVision Web Service≤ 21.03cisa_csaf_otUS
Johnson Controls exacqVision Web Service≤ All versions up to and including 21.03 ≤21.03enisa_euvdEU
johnsoncontrols exacqvision web service≤ 21.03nvdUScpe:2.3:a:johnsoncontrols:exacqvision_web_service:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-21-180-01Exacq Technologies exacqVision Web Service2021-06-29icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could allow an attacker to send malicious requests on behalf of the victim.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2021-06-24modified 2026-06-17

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+53041 more

references (11)

External citations — patches, advisories, analysis.

scry

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