HOMEVULNERABILITIESCVE-2023-28399
HIGH

CVE-2023-28399

CWE-732Published: June 1, 2023· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

Incorrect permission assignment for critical resource exists in CONPROSYS HMI System (CHS) versions prior to 3.5.3. ACL (Access Control List) is not appropriately set to the local folder where the affected product is installed, therefore a wide range of privileges is permitted to a user of the PC where the affected product is installed. As a result, the user may be able to destroy the system and/or execute a malicious program.

NVD Source

Technical Analysis

CVE-2023-28399 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

contec1 product(s)
conprosys hmi system
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://jvn.jp/en/vu/JVNVU93372935/
ADVISORYhttps://www.contec.com/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230531_en.pdf
ADVISORYhttps://www.contec.com/jp/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230531_jp.pdf
ADVISORYhttps://jvn.jp/en/vu/JVNVU93372935/
ADVISORYhttps://www.contec.com/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230531_en.pdf
ADVISORYhttps://www.contec.com/jp/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230531_jp.pdf

All References (6)

→
https://jvn.jp/en/vu/JVNVU93372935/Third Party Advisory
→
https://www.contec.com/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230531_en.pdfVendor Advisory
→
https://www.contec.com/jp/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230531_jp.pdfVendor Advisory
→
https://jvn.jp/en/vu/JVNVU93372935/Third Party Advisory
→
https://www.contec.com/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230531_en.pdfVendor Advisory
→
https://www.contec.com/jp/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230531_jp.pdfVendor Advisory

Quick Facts

CVE IDCVE-2023-28399
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-732
CISA KEVNo
Affected1 vendor(s)
PublishedJun 1, 2023

Related CVEs (CWE-732)

CVE-2025-12004
10.0
CVE-2014-125121
10.0
CVE-2026-9508
10.0
CVE-2021-33509
9.9
CVE-2025-49131
9.9
CVE-2024-5618
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-28399 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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