Node-RED · SSA-834709: Missing Authentication Vulnerability
Affects SiemensSource GCVE Database
Not known to be exploited · CVSS 10.0 Critical : upgrade to 4.3.4-1 as a priority.
Data as of 10 Nov 2026, 13:22 UTC
Thin evidence
One scorer or none| CNA (siemens) | CVSS 3.1 | 10.0 |
|---|---|---|
| CNA (siemens) | CVSS 4.0 | 10.0 |
- Patch
- Available – fixed in 4.3.4-1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 11 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.
What to do
Upgrade SIMATIC IoT2050 to 4.3.4-1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| SiemensSIMATIC IoT2050 Advanced (6ES7647-0BA00-1YA2) | Affected
| Fixed in
|
| SiemensSIMATIC IoT2050 Advanced (6ES7647-0BA00-1YA2) | Affected
| Fixed in– |
| SiemensSIMATIC IoT2050 Basic (6ES7647-0BA00-0YA2) | Affected
| Fixed in
|
| SiemensSIMATIC IoT2050 Basic (6ES7647-0BA00-0YA2) | Affected
| Fixed in– |
| SiemensSIMATIC IoT2050 M.2 (6ES7647-0BB00-1YA2) | Affected
| Fixed in
|
| SiemensSIMATIC IoT2050 M.2 (6ES7647-0BB00-1YA2) | Affected
| Fixed in– |
AI-suggested
Siemens recommends protecting network access to the affected devices with appropriate security mechanisms and configuring the environment according to Siemens' operational guidelines for Industrial Security.
Description
A missing authentication vulnerability (CWE-306) has been identified in Node-RED on the SIMATIC IoT2050 device running Industrial OS by Siemens. Siemens advises protecting network access to these devices using appropriate security mechanisms and following their operational guidelines for Industrial Security.