CVE-2021-27664Public exploitNetwork attack vector

Unauthenticated credential disclosure via passthrough access

Published Oct 11, 2021 · Updated Sep 17, 2024

Improper privilege management in Johnson Controls exacqVision Web Service 21.06.11.0 and earlier allows remote attackers to read stored credentials. When passthrough access is enabled, the unauthenticated /server.web/archive endpoint returns Direct Search usernames and passwords from archiving configuration. Exposure is limited to deployments with a configured passthrough account, and access inherits that account's server privileges.

CVSS severity9.8
Critical
EPSS probability1.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper privilege management in Johnson Controls exacqVision Web Service 21.06.11.0 and earlier allows remote attackers to read stored credentials. When passthrough access is enabled, the unauthenticated /server.web/archive endpoint returns Direct Search usernames and passwords from archiving configuration. Exposure is limited to deployments with a configured passthrough account, and access inherits that account's server privileges.

The record

CVE
CVE-2021-27664
Published
Oct 11, 2021
Updated
Sep 17, 2024
Vendor
Johnson Controls
Product
exacqVision Web Service
Classifications
CWE-269, T1212
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 11, 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=21.06.11.0 <=21.06.11.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Johnson Controls · exacqVision Web Serviceversion=21.06.11.0 <=21.06.11.0

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
9.8Johnson ControlsCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1212Exploitation for Credential Access

Public exploit references

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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