MEDIUM
CVE-2023-2758
CWE-799Published: May 31, 2023· Updated: Jun 17, 2026
5.3
CVSS v3.1
Official 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.
Technical Analysis
CVE-2023-2758 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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
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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
All References (4)
→
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
Quick Facts
CVE IDCVE-2023-2758
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-799
CISA KEVNo
Affected1 vendor(s)
PublishedMay 31, 2023
Related CVEs (CWE-799)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-2758 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.