How severe is CVE-2023-39479?

CVE-2023-39479 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-39479 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39479?

CVE-2023-39479 affects Softing Secure Integration Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-39479?

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.

Does CVE-2023-39479 have an EU (EUVD) identifier?

Yes. CVE-2023-39479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-43202.

When was CVE-2023-39479 published?

CVE-2023-39479 was published on 2024-05-03 and last updated on 2026-06-17.

CVE-2023-39479

CVE-2023-39479 is a high-severity vulnerability in Softing Secure Integration 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-552.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-43202
Weakness: CWE-552
Affected product: Softing Secure Integration Server
Published: 2024-05-03
Last modified: 2026-06-17

Description

Softing Secure Integration Server OPC UA Gateway Directory Creation Vulnerability. This vulnerability allows remote attackers to create directories on affected installations of Softing Secure Integration Server. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the handling of FileDirectory OPC UA Objects. The issue results from allowing unauthorized access to the filesystem. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-20548.

Frequently asked questions

What is CVE-2023-39479?: Softing Secure Integration Server OPC UA Gateway Directory Creation Vulnerability. This vulnerability allows remote attackers to create directories on affected installations of Softing Secure Integration Server. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the handling of FileDirectory OPC UA Objects. The issue results from allowing unauthorized access to the filesystem. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-20548.
How severe is CVE-2023-39479?: CVE-2023-39479 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-39479 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39479?: CVE-2023-39479 affects Softing Secure Integration Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-39479?: 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.
Does CVE-2023-39479 have an EU (EUVD) identifier?: Yes. CVE-2023-39479 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-43202.
When was CVE-2023-39479 published?: CVE-2023-39479 was published on 2024-05-03 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-23-1061/

Affected products (1)

cpe:2.3:a:softing:secure_integration_server:1.22.0.8686:*:*:*:*:*:*:*

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