Summary
Palo Alto Networks has published information on vulnerabilities in PAN-OS related to PHP2Shell vulnerabilities. This advisory lists the related Siemens Industrial products affected by these vulnerabilities. Customers are advised to consult and implement the workarounds provided in Palo Alto Networks' upstream security notifications.
The following versions of Siemens RUGGEDCOM APE1808 are affected:
- RUGGEDCOM APE1808 vers:all/* (CVE-2026-109618, CVE-2026-109619)
CVSS
Vendor
Equipment
v3 9.8
Siemens
RUGGEDCOM APE1808
1 Vulnerability
Use After Free
Background
- Critical Infrastructure Sectors: Critical Manufacturing
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: Germany
Vulnerabilities
Expand All +
CVE-2026-109618
PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort handling of the request. Some contexts may not properly account for this scenario and leave request memory in an uninitialized state before performing an allocation. The subsequent request cleanup procedure may read or branch on this memory. Multiple OOM strategies can consistently trigger this condition and lead to remote code execution (RCE).
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1 Affected Product
RUGGEDCOM APE1808 with Palo Alto Networks PAN-OS (10.2 All, 11.1 All, 11.2 All, 12.1 All, 12.2 All)
Product Status: known_affected
Remediations
Vendor fix
Upgrade to corresponding available PAN-OS version. Contact customer support to receive additional patch and update information.
Additional Metrics
Relevant CWE: CWE-416 Use After Free
CVSS Version
Base Score
Base Severity
Vector String
3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2026-109619
PHP has various global state that temporarily points into request memory. In some scenarios, global state may not be correctly reset, or may be repopulated after being reset. The global state may then refer to request memory even after it has been freed. Subsequent requests may read or branch on this stale state before it is fully initialized. Multiple strategies can trigger this condition and produce remote code execution (RCE).
Read More
2 Affected Products
RUGGEDCOM APE1808 with Palo Alto Networks PAN-OS (10.2 All, 11.1 All, 11.2 All, 12.1 All, 12.2 All)
Product Status: known_affected
Remediations
Vendor fix
Upgrade to corresponding available PAN-OS version. Contact customer support to receive additional patch and update information.
RUGGEDCOM APE1808 with Palo Alto Networks PAN-OS (10.2 All, 11.1 All, 11.2 All, 12.1 All, 12.2 All)
Product Status: known_affected
Remediations
Vendor fix
Upgrade to corresponding available PAN-OS version. Contact customer support to receive additional patch and update information.
Additional Metrics
Relevant CWE: CWE-416 Use After Free
CVSS Version
Base Score
Base Severity
Vector String
3.1
8.1
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Acknowledgments
- Siemens ProductCERT reported these vulnerabilities to CISA.
General Recommendations
As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories
Terms of Use
The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities.
- Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
- Locate control system networks and remote devices behind firewalls and isolating them from business networks.
- When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial
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