CVE-2023-2758 json
Contec CONPROSYS HMI System (CHS) v3.5.2 Denial of Service
published 2023-05-31 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-34216
- cvss
- 3.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- contec conprosys_hmi_system 3.5.3
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 21 mo ago
Exploit prediction
1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- tenable.com https://www.tenable.com/security/research/tra-2023-21 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVD | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
Affected products
- Contec CONPROSYS HMI System
Classification
- Weakness
-
- CWE-799 Improper Control of Interaction Frequency
References
-
tenable.com
/security/research/tra-2023-21
exploit, third-party-advisory
-
jvn.jp
/en/vu/JVNVU93372935/index.html
third-party-advisory
Sources
- CVE List CVE-2023-2758
- NVD CVE-2023-2758
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