How severe is CVE-2016-5793?

CVE-2016-5793 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-5793 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-5793?

CVE-2016-5793 affects Moxa Active Opc Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-5793?

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

When was CVE-2016-5793 published?

CVE-2016-5793 was published on 2016-09-24 and last updated on 2026-06-17.

CVE-2016-5793

CVE-2016-5793 is a high-severity vulnerability in Moxa Active Opc Server with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-428.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-428
Affected product: Moxa Active Opc Server
Published: 2016-09-24
Last modified: 2026-06-17

Description

Unquoted Windows search path vulnerability in Moxa Active OPC Server before 2.4.19 allows local users to gain privileges via a Trojan horse executable file in the %SYSTEMDRIVE% directory.

Frequently asked questions

What is CVE-2016-5793?: Unquoted Windows search path vulnerability in Moxa Active OPC Server before 2.4.19 allows local users to gain privileges via a Trojan horse executable file in the %SYSTEMDRIVE% directory.
How severe is CVE-2016-5793?: CVE-2016-5793 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-5793 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-5793?: CVE-2016-5793 affects Moxa Active Opc Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-5793?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-5793 published?: CVE-2016-5793 was published on 2016-09-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:moxa:active_opc_server:*:*:*:*:*:*:*:*

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