CVE-2023-39479: Softing Secure Integration Server OPC UA Gateway Directory Creation Vulnerability

This month

HIGH 8.8DOWNGRADE

CVE-2023-39479 is a high-severity flaw (CVSS 8.8) affecting secure integration server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 unaut

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.6% (top 25%)
CISA exploited list	No
Weakness	CWE-552
Published	2024-05-03
Last modified	2026-06-17

Publisher (CNA): Zero Day Initiative · Vendor: softing

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-05-03 03:15 UTCPublished CVE record published
2026-06-17 06:12 UTCUpdated Record last modified

softing secure integration server DOWNGRADE

Affected: 1.22.0.8686

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.22.0.8686

1. Check installed version

apt-cache policy secure-integration-server || rpm -q secure-integration-server || secure-integration-server --version

2. No fixed release: DOWNGRADE to a release before 1.22.0.8686 (Debian / Ubuntu)

apt-cache madison secure-integration-server sudo apt install secure-integration-server=<VERSION_BEFORE_1.22.0.8686> sudo apt-mark hold secure-integration-server

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list secure-integration-server sudo dnf downgrade secure-integration-server-<VERSION_BEFORE_1.22.0.8686> sudo dnf versionlock add secure-integration-server

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-39479?

secure integration server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-39479 being exploited?

CVE-2023-39479 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-39479 affect?

CVE-2023-39479 affects secure integration server. Severity is high (CVSS 8.8). 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 r

How urgent is CVE-2023-39479?

Priority 50/100. High severity

Related CVEs

CVE-2023-41151 HIGH 7.5 UPGRADE UPGRADE An uncaught exception issue discovered in Softing OPC UA C++ SDK before 6.30 for Windows operating system may
CVE-2023-39482 MEDIUM 6.5 UPGRADE UPGRADE Softing Secure Integration Server Hardcoded Cryptographic Key Information Disclosure Vulnerability
CVE-2023-39481 HIGH 8.8 UPGRADE Softing Secure Integration Server Interpretation Conflict Remote Code Execution Vulnerability
CVE-2023-39480 MEDIUM 6.5 DOWNGRADE Softing Secure Integration Server FileDirectory OPC UA Object Arbitrary File Creation Vulnerability
CVE-2023-39478 HIGH 8.8 DOWNGRADE Softing Secure Integration Server Exposure of Resource to Wrong Sphere Remote Code Execution Vulnerability

References

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