CVE-2023-22331

highpriority · track · 30OT risk · elevatedEPSS 0.010 · 63 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.01% (63rd) EPSS

CVSS 7.5 · high

Is it mine?

6 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

Use of default credentials vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote unauthenticated attacker to alter user credentials information.

remediations

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

A vendor fix is available.

FixedCONPROSYS HMI System (CHS)cisa_csaf_ot
Contec recommends users update to CONPROSYS HMI System (CHS) Ver.3.5.0 or later.
https://www.contec.com/software-update/?year=d90a89d4-f21e-4fc2-bab0-291bb3d23495

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 · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · 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:H/A:Nsecondary · CISA US

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

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondaryexploitability 3.9 · impact 3.6

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

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-269USprimaryCWE-1392US

affected products (6)

Products and version ranges known to be affected.

CONPROSYS HMI System (CHS): Ver.3.4.4 and priorall versionscisa_csaf_otUS
CONPROSYS HMI System (CHS): Ver.3.4.5 and priorall versionscisa_csaf_otUS
Contec CONPROSYS HMI System (CHS)≤ 3.4.4cisa_csaf_otUS
Contec CONPROSYS HMI System (CHS)≤ 3.4.5cisa_csaf_otUS
Contec Co., Ltd. CONPROSYS HMI System (CHS)≤ Ver.3.4.5 and earlierenisa_euvdEU
contec conprosys hmi system≤ 3.4.5nvdUScpe:2.3:a:contec:conprosys_hmi_system:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-22-347-03Contec CONPROSYS HMI System (CHS)2022-12-13icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow a remote attacker to send specially crafted requests and cause a loss of sensitive information.

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 2023-01-20modified 2026-06-17

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references (14)

External citations — patches, advisories, analysis.

scry

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