CVE-2023-2758

Name: CVE-2023-2758
Creator: NVD / NIST
Published: 2023-05-31T15:15:09.473+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.04%

Last modified Jun 17, 2026

CVE-2023-2758 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A denial of service vulnerability exists in Contec CONPROSYS HMI System versions 3.5.2 and prior. When there is a time-zone mismatch in certain configuration files, a remote, unauthenticated attacker may deny logins for an extended period of time.. EPSS estimates a 1.04% chance of exploitation in the next 30 days.

Description

A denial of service vulnerability exists in Contec CONPROSYS HMI System versions 3.5.2 and prior. When there is a time-zone mismatch in certain configuration files, a remote, unauthenticated attacker may deny logins for an extended period of time.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS Probability

1.04%

59.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-799

Affected Software

Vendor	Product	Versions
Contec	Conprosys Hmi System	< 3.5.3

References

https://jvn.jp/en/vu/JVNVU93372935/index.htmlThird Party Advisory
https://www.tenable.com/security/research/tra-2023-21Exploit, Third Party Advisory
https://jvn.jp/en/vu/JVNVU93372935/index.htmlThird Party Advisory
https://www.tenable.com/security/research/tra-2023-21Exploit, Third Party Advisory

Timeline

Published: May 31, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-2758?

How severe is CVE-2023-2758?

CVE-2023-2758 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.04% probability of exploitation in the next 30 days.

How do I fix CVE-2023-2758?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-2758?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST