The OPC UA Legacy Java Stack before 6f176f2 enables an attacker to block OPC UA server…
Priority LOW 35CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-400.
Summary
The OPC UA Legacy Java Stack before 6f176f2 enables an attacker to block OPC UA server applications via uncontrolled resource consumption so that they can no longer serve client applications.
Why it matters now
EPSS 0.01168 67th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:opcfoundation:ua_java_legacy:*:*:*:*:*:*:*:* | before 2023-04-28 | Vulnerable | OPC Foundation |
| cpe:2.3:a:prosysopc:ua_historian:*:*:*:*:*:*:*:* | before 1.2.0 | Vulnerable | Prosys OPC |
| cpe:2.3:a:prosysopc:ua_modbus_server:*:*:*:*:*:*:*:* | before 1.4.20 | Vulnerable | Prosys OPC |
| cpe:2.3:a:prosysopc:ua_simulation_server:*:*:*:*:*:*:*:* | before 5.4.2 | Vulnerable | Prosys OPC |
- cpe:2.3:a:opcfoundation:ua_java_legacy:*:*:*:*:*:*:*:* Versions before 2023-04-28 Vulnerable ·OPC Foundation
- cpe:2.3:a:prosysopc:ua_historian:*:*:*:*:*:*:*:* Versions before 1.2.0 Vulnerable ·Prosys OPC
- cpe:2.3:a:prosysopc:ua_modbus_server:*:*:*:*:*:*:*:* Versions before 1.4.20 Vulnerable ·Prosys OPC
- cpe:2.3:a:prosysopc:ua_simulation_server:*:*:*:*:*:*:*:* Versions before 5.4.2 Vulnerable ·Prosys OPC
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-32787
- 2026-10-03 Alias added: GHSA-2254-9c75-9fpv
References
Sources
- CVE-2023-32787 · CVE Program
- CVE-2023-32787 · NVD
- FIRST EPSS
- GHSA-2254-9c75-9fpv · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences