CVE-2023-2758
Contec Conprosys Hmi System ≤ 3.5.3
Raw vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:LCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-2758 is a low-severity Improper Control of Interaction Frequency (CWE-799) vulnerability in Contec Conprosys Hmi System. Its CVSS base score is 3.7 (Low).
Operationally, ranked in the top 37% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-34216
Vulnerability Data
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.
- CWE(s)
Related Threats
CVEs Like This One
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
The control requires defining frequency, timing, and approval for security interactions, directly addressing uncontrolled interaction rates.
Allocation policies inherently restrict interaction frequency, reducing the impact of excessive requests.
Spam protection explicitly controls interaction frequency by detecting and acting on bulk unsolicited messages from external sources.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Application security requirements explicitly include controls on interaction frequency and throttling.
Secure architecture principles recommend rate-limiting and resource-management mechanisms.
Secure coding practices can embed input-frequency and throttling checks in code.
Capacity management directly limits request rates and resource exhaustion that CWE-799 describes.
Hardening callouts derived
DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.
- No fine-grained STIG row for CWE-799, a class-level weakness. Rules are authored against its narrower children: CWE-307.