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CVE-2023-28824

MEDIUM
4.9
CVSS Score
Published: June 1, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:48 AM UTC
1 product affected across 1 vendorCONPROSYS HMI System

Using CONPROSYS HMI System (CHS) by Contec Co., Ltd.?

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Severity
MEDIUM4.9
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

Server-side request forgery vulnerability exists in CONPROSYS HMI System (CHS) versions prior to 3.5.3. A user who can access the affected product with an administrative privilege may bypass the database restriction set on the query setting page, and connect to a user unintended database.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

CONPROSYS HMI System· Contec
95%
v < 3.5.3
Affected range stops below 3.5.3, so it looks safe — our inference, not a vendor statement

References (3)

Third Party Advisory
Source: [email protected]
https://jvn.jp/en/vu/JVNVU93372935/
Vendor Advisory
Source: [email protected]
https://www.contec.com/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230531_en.pdf
Vendor Advisory
Source: [email protected]
https://www.contec.com/jp/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230531_jp.pdf

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.9MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-918

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