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Industrial control advisorySeverity 7.5 high
Siemens License Server (SLS)
ICSA-26-225-07 · CISA · August 11, 2026
Summary
Siemens License Server is affected by multiple vulnerabilities which could allow an attacker to elevate its privileges and read arbitrary files on the system.
Siemens has released a new version for Siemens License Server (SLS) and recommends to update to the latest version.
From CISA, quoted as published. Check the source before acting.
What to do
Update to V5.1 or later version
Update to V5.3 or later version
Vendor fix or mitigation, quoted from the advisory.
Each CVE in this advisory
| CVE | Severity | Known exploited | Exploit likelihood |
|---|---|---|---|
| CVE-2026-69108 | 6.0 medium | No | 0.2% |
| CVE-2026-69109 | 7.5 high | No | 0.6% |
Severity from the advisory (CVSS), known exploitation from CISA's catalog, exploit likelihood from EPSS (next 30 days).
Affected products
| Vendor | Product |
|---|---|
| Siemens | Siemens License Server (SLS) |
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
- August 11, 2026: Publication Date
- August 12, 2026: Initial CISA Republication of Siemens ProductCERT SSA-077553 advisory
- November 9, 2026: First collected by Watch
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