CVE-2022-21939Network attack vector

Session hijacking via script-readable cookie

Published Feb 9, 2023 · Updated Mar 24, 2025

Missing HttpOnly protection in Johnson Controls System Configuration Tool 14 before 14.2.3 and 15 before 15.0.3 allows attackers to hijack sessions. The SCT web interface sends an affected cookie without the HttpOnly attribute, leaving it readable to script executing in the victim's browser. A cross-site scripting attack and victim interaction are required; cookie access permits takeover of the victim's SCT session.

CVSS severity7.5
High
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing HttpOnly protection in Johnson Controls System Configuration Tool 14 before 14.2.3 and 15 before 15.0.3 allows attackers to hijack sessions. The SCT web interface sends an affected cookie without the HttpOnly attribute, leaving it readable to script executing in the victim's browser. A cross-site scripting attack and victim interaction are required; cookie access permits takeover of the victim's SCT session.

The record

CVE
CVE-2022-21939
Published
Feb 9, 2023
Updated
Mar 24, 2025
Vendor
Johnson Controls
Product
System Configuration Tool (SCT)
Classifications
CWE-1004, CWE-732, CAPEC-212, T1539
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 24, 2025Record 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=14 <14.2.3
  2. Affected versionversion=15 <15.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Johnson Controls · System Configuration Tool (SCT)version=14 <14.2.3; version=15 <15.0.3

Published CVSS scores

6.1NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
7.5Johnson ControlsCVSS:3.1/AV:N/AC:H/PR:N/UI:R/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-1004Sensitive Cookie Without 'HttpOnly' Flag
CWE-732Incorrect Permission Assignment for Critical Resource
CAPEC-212Functionality Misuse
T1539Steal Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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