CVE-2026-110936: Siemens Software Center Uncontrolled Search Path Element Vulnerability

What it is

A vulnerability has been identified in Siemens Software Center (All versions < V4.0.9.8). The affected application loads dynamic-link libraries (DLLs) from an uncontrolled search path. This could allow an authenticated local attacker to place a specially crafted DLL in a directory that the application searches, leading to arbitrary code execution with the privileges of the affected application.

Exploitation evidence

First exploit evidence seen: 2026-10-20 (earliest date across the sources below).

Exploited in the wild

• CISA KEV: listed since 2026-10-20. Source

Public exploit code

GitHub proof-of-concept repositories below quality bar

1 public repositories from 1 accounts, first seen 2026-10-21.

Verify before running: public PoCs can be malicious. Read the code and only run it in an isolated lab. A PoC means exploit code is public, not that this CVE is exploited in the wild.

Sources: CISA KEV · nomi-sec/PoC-in-GitHub.

How to fix it

CISA required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. (source: CISA KEV)

Fixed versions

• siemens software center: upgrade to 4.0.9.8 or later

Derived from the NVD CPE configuration (versionEndExcluding / versionEndIncluding). Always confirm with the vendor advisory.

Vendor advisories and patches

• https://productcert.siemens.com/productcert/html/ssa-580366.html (CISA KEV notes)
• https://cert-portal.siemens.com/productcert/html/ssa-580366.html (Patch, Vendor Advisory)
• https://productcert.siemens.com/news/2026/10/19/active-exploitation-of-cve-2026-110936-in-siemens-software-center/ (Patch, Vendor Advisory)

MITRE ATT&CK mitigations for this chain

• M1038 Execution Prevention (for T1574.001) : Identify and block potentially malicious software executed through DLL hijacking by using application control solutions capable of blocking DLLs loaded by legitimate software.
• M1044 Restrict Library Loading (for T1574.001) : Disallow loading of remote DLLs. This is included by default in Windows Server 2012+ and is available by patch for XP+ and Server 2003+. Enable Safe DLL Search Mode to move the user's current folder later in the search order. This is included by default in modern versions of Windows; the associated Windows Registry ke
• M1051 Update Software (for T1574.001) : Update software regularly to include patches that fix DLL side-loading vulnerabilities.
• M1047 Audit (for T1574.001) : Use auditing tools capable of detecting DLL search order hijacking opportunities on systems within an enterprise and correct them. Toolkits like the PowerSploit framework contain PowerUp modules that can be used to explore systems for DLL hijacking weaknesses. Use the program `sxstrace.exe` that is included with Windo
• M1013 Application Developer Guidance (for T1574.001) : When possible, include hash values in manifest files to help prevent side-loading of malicious libraries.

Detection Generic guidance

• Execution: Watch for the service process spawning shells or script interpreters (cmd.exe, powershell, sh, bash, python) via EDR process-tree rules.

Response checklist Generic guidance

1. Inventory: find every instance of the affected product and version (include internet-facing and forgotten ones).
2. Patch or mitigate per the vendor advisory; if you cannot patch, remove internet exposure or apply the vendor workaround.
3. Assume compromise if the system was exposed before patching: hunt for the indicators in the advisory and review logs back to the disclosure date.
4. Rotate credentials and secrets stored on or used by the affected system if compromise cannot be ruled out.