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Industrial control advisorySeverity 8.8 highExploit likelihood 75%
Siemens Products using OpenSSL
ICSA-26-174-03 · CISA · June 9, 2026
Summary
OpenSSL has published a stack based buffer overflow vulnerability that allows a remote attacker to cause a denial of service (DoS) or potentially allow for remote code execution.
Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.
From CISA, quoted as published. Check the source before acting.
What to do
As a defense-in-depth measure, organizations may review whether affected systems are exposed to untrusted CMS/PKCS#7 content from external sources.
Do not accept files from untrusted and unvalidated sources in the affected applications
Restrict the port at the host with the DeviceConnectionProxy to secure destinations
Securing the connected email server as follows:
• Configure the email server to enforce encrypted communication (TLS/SSL) for all SMTP connections.
• Restrict access to the email server to trusted systems only (e.g., by using firewall rules or IP allowlists).
• Ensure strong authentication to access the email server.
• Keep the email server software and underlying operating system up to date with the latest security patches.
Securing the connected email server as follows:
• Configure the email server to enforce encrypted communication (TLS/SSL) for all SMTP connections.
• Restrict access to the email server to trusted systems only (e.g., by using firewall rules or IP allowlists).
• Ensure strong authentication to access the email server.
• Keep the email server software and underlying operating system up to date with the latest security patches.
The hardening instructions mentioned in the products security concept should be followed
Currently no fix is planned
Currently no fix is available
Update to V1.0 SP2 Update 5 or later version
Update to V1.8.0 or later version
Update to V17 Update 9 or later version
Update to V2.15.3.0 or later version
Update to V21 or later version
Update to V3.1.13 or later version
Update to V3.19 P024 or later version
Update to V3.2.4 or later version
Update to V3.20 P012 or later version
Update to V3.21 P02 or later version
Update to V3.3.2 or later version
Update to V4.2 SP3 or later version
Updated software version can be obtained from Siemens customer support or a local partner.
Update to V5.7 SP4 or later version
Update to V9.3 SP2 or later version
Contact customer support [email protected]
Contact customer support
Vendor fix or mitigation, quoted from the advisory.
Each CVE in this advisory
| CVE | Severity | Known exploited | Exploit likelihood |
|---|---|---|---|
| CVE-2025-15467 | 8.8 high | No | 74.8% |
Severity from the advisory (CVSS), known exploitation from CISA's catalog, exploit likelihood from EPSS (next 30 days).
Affected products
| Vendor | Product |
|---|---|
| Siemens | AI Lightweight Inference Server |
| Siemens | Connector for Azure |
| Siemens | Databus |
| Siemens | HiMed Cockpit |
| Siemens | RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) |
| Siemens | RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2) |
| Siemens | RUGGEDCOM ROX MX5000 |
| Siemens | RUGGEDCOM ROX MX5000RE |
| Siemens | RUGGEDCOM ROX RX1400 |
| Siemens | RUGGEDCOM ROX RX1500 |
| Siemens | RUGGEDCOM ROX RX1501 |
| Siemens | RUGGEDCOM ROX RX1510 |
| Siemens | RUGGEDCOM ROX RX1511 |
| Siemens | RUGGEDCOM ROX RX1512 |
| Siemens | RUGGEDCOM ROX RX1524 |
| Siemens | RUGGEDCOM ROX RX1536 |
| Siemens | RUGGEDCOM ROX RX5000 |
| Siemens | SCALANCE LPE9403 (6GK5998-3GS00-2AC2) |
| Siemens | SCALANCE LPE9413 (6GK5998-3GS01-2AC2) |
| Siemens | SCALANCE LPE9433 (6GK5998-3GS11-2AC2) |
| Siemens | SCALANCE M804PB (6GK5804-0AP00-2AA2) |
| Siemens | SCALANCE M812-1 ADSL-Router family |
| Siemens | SCALANCE M816-1 ADSL-Router family |
| Siemens | SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2) |
| Siemens | SCALANCE M874-2 (6GK5874-2AA00-2AA2) |
| Siemens | SCALANCE M874-3 (6GK5874-3AA00-2AA2) |
| Siemens | SCALANCE M874-3 3G-Router (CN) (6GK5874-3AA00-2FA2) |
| Siemens | SCALANCE M876-3 (6GK5876-3AA02-2BA2) |
| Siemens | SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2) |
| Siemens | SCALANCE M876-4 (6GK5876-4AA10-2BA2) |
| Siemens | SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2) |
| Siemens | SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2) |
| Siemens | SCALANCE MUB852-1 (A1) (6GK5852-1EA10-1AA1) |
| Siemens | SCALANCE MUB852-1 (B1) (6GK5852-1EA10-1BA1) |
| Siemens | SCALANCE MUM853-1 (A1) (6GK5853-2EA10-2AA1) |
| Siemens | SCALANCE MUM853-1 (B1) (6GK5853-2EA10-2BA1) |
| Siemens | SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1) |
| Siemens | SCALANCE MUM856-1 (A1) (6GK5856-2EA10-3AA1) |
| Siemens | SCALANCE MUM856-1 (B1) (6GK5856-2EA10-3BA1) |
| Siemens | SCALANCE MUM856-1 (CN) (6GK5856-2EA00-3FA1) |
244 more in the source.
Why it's on these mode pages
- Maritime: Vendor table: Siemens (industrial control makers used in every mode, all modes) (matched by rule)
- Pipeline: Vendor table: Siemens (industrial control makers used in every mode, all modes) (matched by rule)
- Freight rail: Vendor table: Siemens (industrial control makers used in every mode, all modes) (matched by rule)
- Passenger rail and transit: Vendor table: Siemens (industrial control makers used in every mode, all modes) (matched by rule)
- Highway and motor carrier: Vendor table: Siemens (industrial control makers used in every mode, all modes) (matched by rule)
- Postal and parcel: Vendor table: Siemens (industrial control makers used in every mode, all modes) (matched by rule)
Change history
- June 9, 2026: Publication Date
- June 23, 2026: CISA Republication - Initial CISA Republication of Siemens ProductCERT SSA-434797 advisory
- July 14, 2026: Added SCALANCE X-200 family, X-200IRT family, X-200RNA family, X-300/408 family, SC-600 family to Known Not Affected and fix for SINUMERIK Access MyMachine /OPC UA , SIMOVE Fleetmanager. Updated remediation to No fix planned for SIMATIC Comfort/Mobile RT
- August 11, 2026: Added RUGGEDCOM ROX II family and SIMATIC HMI Operator Device to Known Not Affected and removed SIMATIC Comfort/Mobile RT and updated SIMATIC Advanced HMI Panels and SIMATIC HMI Basic Panels to no fix available; Added fix for SIMATIC PDM V9.3 and added PCS neo V6.0 and Simatic Logon to affected products.
- September 8, 2026: Updated remediation for AI Lightweight Inference Server to no fix planned.
- September 15, 2026: CISA Republication update based on Siemens ProductCERT SSA-434797 advisory
- November 9, 2026: First collected by Watch
Securidigm Scout can match advisories like this one to the equipment on your own network, offline. securidigm.com