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Industrial control advisorySeverity 7.5 high
Siemens RUGGEDCOM APE1808 Devices
ICSA-26-295-18 · CISA · October 13, 2026
Summary
Nozomi Networks has published information on vulnerabilities in Nozomi Guardian/CMC. This advisory lists the related Siemens Industrial products affected by these vulnerabilities.
Siemens recommends to contact customer support to receive patch and update information.
From CISA, quoted as published. Check the source before acting.
What to do
Contact customer support to receive patch and update information
Vendor fix or mitigation, quoted from the advisory.
Each CVE in this advisory
| CVE | Severity | Known exploited | Exploit likelihood |
|---|---|---|---|
| CVE-2026-33387 | 4.6 medium | No | 0.3% |
| CVE-2026-33388 | 7.4 high | No | 0.4% |
| CVE-2026-33389 | 7.5 high | No | 0.2% |
| CVE-2026-33391 | 5.4 medium | No | 0.4% |
| CVE-2026-33920 | 3.5 low | No | 0.1% |
Severity from the advisory (CVSS), known exploitation from CISA's catalog, exploit likelihood from EPSS (next 30 days).
Affected products
| Vendor | Product |
|---|---|
| Siemens | RUGGEDCOM APE1808 |
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
- October 13, 2026: Publication Date
- October 22, 2026: Initial CISA Republication of Siemens ProductCERT SSA-911336 advisory
- November 9, 2026: First collected by Watch
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