CVE-2021-27665

mediumpriority · track · 31EPSS 0.016 · 75 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.57% (75th) EPSS

CVSS 5 · 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

An unauthenticated remote user could exploit a potential integer overflow condition in the exacqVision Server with a specially crafted script and cause denial-of-service condition.

remediations

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

A vendor fix is available.

FixedexacqVision Server 32-bitcisa_csaf_ot
Upgrade exacqVision Server 32-bit to Version 21.09 or upgrade to exacqVision Server 64-bit.
MitigationexacqVision Server 32-bitcisa_csaf_ot
Current users can obtain the critical software update from the software download location.
https://www.exacq.com/support/downloads.php

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · CISA US

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · productsecurity@jci.comexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-190USprimaryCWE-190US

affected products (4)

Products and version ranges known to be affected.

exacqVision Server 32-bit: Versions 21.06.11.0 and priorall versionscisa_csaf_otUS
Exacq Technologies, Johnson Controls Inc. exacqVision Server 32-bit≤ 21.06.11.0cisa_csaf_otUS
Johnson Controls exacqVision Web Service≤ 21.06.11.0 ≤21.06.11.0enisa_euvdEU
johnsoncontrols exacqvision server≤ 21.06.11.0nvdUScpe:2.3:a:johnsoncontrols:exacqvision_server:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-21-280-03Johnson Controls exacqVision2021-10-07icsa · cisa_csaf_otUS
Successful exploitation of this vulnerability could allow an unauthenticated remote user to exploit an integer overflow in the exacqVision Server with a specially crafted script and cause a denial-of-service condition.

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 2021-10-11modified 2026-06-17

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+4653 more

references (10)

External citations — patches, advisories, analysis.

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