Advisories › Siemens › ICSA-26-202-02

Siemens RUGGEDCOM APE1808 with Palo Alto Networks Virtual NGFW: 3 CVEs, High 7.2

High 7.2 Oil & gas relevant ICSA-26-202-02 · Published Jul 21, 2026

Summary

CISA reports 3 vulnerabilities in Siemens RUGGEDCOM APE1808. Weakness types: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), Missing Authorization, Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'). Palo Alto Networks has published [1] information on vulnerabilities in PAN-OS. This advisory lists the related Siemens Industrial products affected by these vulnerabilities. Highest CVSS v3 score: 7.2 (High), exploitable over the network.

What to do: Prioritize: Review the vendor guidance linked in the source advisory and apply CISA's recommended practices.
Why this matters for oil & gas: Siemens (SIMATIC S7, PCS 7, WinCC, RUGGEDCOM) is widely used in process plants and pipelines; Affected products include RUGGEDCOM.

At a glance

Vendor
Siemens
Products
RUGGEDCOM APE1808
CVEs
CVE-2026-0266, CVE-2026-0272, CVE-2026-0273
Highest CVSS v3
7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Highest CVSS v4
–
Known exploited (KEV)
No CVE from this advisory is on the KEV list as of the last refresh
Sectors (per CISA)
Critical Manufacturing
Deployed
Worldwide
Vendor HQ
Germany

Vulnerabilities

CVEWeaknessCVSS v3CVSS v4KEVDescription (from advisory)
CVE-2026-0266Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')2.4–NoCVE-2026-0266
CVE-2026-0272Missing Authorization6.5–NoCVE-2026-0272
CVE-2026-0273Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')7.2–NoCVE-2026-0273

Affected products (1)

Vendor fixes and mitigations (from advisory)

Also apply CISA's standard ICS practices: minimize network exposure, keep control networks behind firewalls and isolated from business networks, and use up-to-date secure remote access.

Sources

This page is generated automatically from the CISA advisory text. It is not a substitute for the vendor's guidance; verify affected versions and fixes at the source before making changes to control systems.

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