open62541 History Backend ua_history_data_backend_memory.c UA_DataValue_backend_copyRange use after free
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
A vulnerability was detected in open62541 up to 1.5.5. Affected by this vulnerability is the function UA_DataValue_backend_copyRange of the file plugins/historydata/ua_history_data_backend_memory.c of the component History Backend. The manipulation results in use after free. The attack can be launched remotely. The exploit is now public and may be used. The project closed the issue report, stating that this is not the official way to report a security vulnerability.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | open62541 | 1.5.0; 1.5.1; 1.5.2; 1.5.3; 1.5.4; 1.5.5 | — | No fix listed | CNA |
- open62541 Vendor— Affected 1.5.0; 1.5.1; 1.5.2; 1.5.3; 1.5.4; 1.5.5 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-82623
- 2026-10-03 Alias added: GHSA-w6p5-54jx-cmmh
References
Sources
- CVE-2026-82623 · CVE Program
- CVE-2026-82623 · NVD
- FIRST EPSS
- GHSA-w6p5-54jx-cmmh · GitHub Advisory Database · CC BY 4.0
- CVE-2026-82623 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences