7.5

CVE-2023-22339: contec co., ltd. conprosys hmi system (chs) Improper Access Control

CVSS: 7.5v3.1HighModified
Published 20-01-2023Last modified 03-04-2025
Open JSON

Vulnerability summary

CVE-2023-22339 is a high (CVSS 7.5) Improper Access Control vulnerability in contec co., ltd. conprosys hmi system (chs). EPSS estimates a 1.14% chance of exploitation in the next 30 days, higher than 66.2% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
1.14%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 20-01-2023
    PublishedVulnerability first disclosed.
  2. 03-04-2025
    Last modifiedVulnerability information updated.

Description

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 metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

1.14%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

0.00 pp

From 1.14% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.14%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Contec1 product
Contec co., ltd.1 product

2 vendors · 2 products

References

4 links