CVE-2023-22339

HIGHNVD 7.57.5—

7.5

Improper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote unauthenticated attacker to bypass access restriction and obtain the server certificate including the private key of the product.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 41.6%
KEV: Not listed

Published

January 20, 2023

Last Modified

April 3, 2025

References (8)

vultures@jpcerthttps://jvn.jp/en/vu/JVNVU96873821
vultures@jpcerthttps://www.cisa.gov/uscert/ics/advisories/icsa-22-347-03
vultures@jpcerthttps://www.contec.com/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230110_en.pdf
vultures@jpcerthttps://www.contec.com/download/contract/contract4/?itemid=ea8039aa-3434-4999-9ab6-897aa690210c&downloaditemid=866d7d3c-aae9-438d-87f3-17aa040df90b
af854a3a-2127-422b-91ae-364da2661108https://jvn.jp/en/vu/JVNVU96873821
af854a3a-2127-422b-91ae-364da2661108https://www.cisa.gov/uscert/ics/advisories/icsa-22-347-03
af854a3a-2127-422b-91ae-364da2661108https://www.contec.com/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230110_en.pdf
af854a3a-2127-422b-91ae-364da2661108https://www.contec.com/download/contract/contract4/?itemid=ea8039aa-3434-4999-9ab6-897aa690210c&downloaditemid=866d7d3c-aae9-438d-87f3-17aa040df90b

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-284Improper Access Control

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:11 UTCepss_batch
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2026-05-26 07:18 UTCepss_batch

Frequently asked(5)

What is CVE-2023-22339?

CVE-2023-22339 is a high vulnerability published on January 20, 2023. Improper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote unauthenticated attacker to bypass access restriction and obtain the server certificate including the private key of the product.

When was CVE-2023-22339 disclosed?

CVE-2023-22339 was first published in the National Vulnerability Database on January 20, 2023, with the most recent update on April 3, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-22339 actively exploited?

CVE-2023-22339 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 41.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-22339?

CVE-2023-22339 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2023-22339?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-22339, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2023-22339

📅 Published

🔄 Last Modified

🔗 References (8)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-22339?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (8)

Frequently asked(5)

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