How severe is CVE-2022-44456?

CVE-2022-44456 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-44456 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 70% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-44456?

CVE-2022-44456 affects Contec Conprosys Hmi System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-44456?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2022-44456 published?

CVE-2022-44456 was published on 2022-12-19 and last updated on 2026-06-17.

CVE-2022-44456

CVE-2022-44456 is a critical-severity vulnerability in Contec Conprosys Hmi System with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 70% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 70% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Contec Conprosys Hmi System
Published: 2022-12-19
Last modified: 2026-06-17

Description

CONPROSYS HMI System (CHS) Ver.3.4.4?and earlier allows a remote unauthenticated attacker to execute an arbitrary OS command on the server where the product is running by sending a specially crafted request.

Frequently asked questions

What is CVE-2022-44456?: CONPROSYS HMI System (CHS) Ver.3.4.4?and earlier allows a remote unauthenticated attacker to execute an arbitrary OS command on the server where the product is running by sending a specially crafted request.
How severe is CVE-2022-44456?: CVE-2022-44456 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-44456 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 70% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-44456?: CVE-2022-44456 affects Contec Conprosys Hmi System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-44456?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-44456 published?: CVE-2022-44456 was published on 2022-12-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:contec:conprosys_hmi_system:*:*:*:*:*:*:*:*

More vulnerabilities in Contec Conprosys Hmi System

CVE-2023-28657 — High (CVSS 8.8): Improper access control vulnerability exists in CONPROSYS HMI System (CHS) versions prior to 3.5.3. A user of the PC…
CVE-2023-28713 — High (CVSS 8.1): Plaintext storage of a password exists in CONPROSYS HMI System (CHS) versions prior to 3.5.3. Because account…
CVE-2023-28399 — High (CVSS 7.8): Incorrect permission assignment for critical resource exists in CONPROSYS HMI System (CHS) versions prior to 3.5.3. ACL…
CVE-2025-34081 — High (CVSS 7.5): The Contec Co.,Ltd. CONPROSYS HMI System (CHS) exposes a PHP phpinfo() debug page to unauthenticated users that may…
CVE-2023-22339 — High (CVSS 7.5): Improper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote…
CVE-2023-22331 — High (CVSS 7.5): Use of default credentials vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote…

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