Summary
| Parameter | Value |
|---|---|
| CVE ID | CVE-2026-40128 |
| Alert Source | GitHub Advisory - Critical Vulnerability |
| CVE Publication Year | 2026 |
| Date Published | 2026-06-09 |
| Vendor | — |
| Product | — |
| CVSS Score | 9.0 (critical) |
| EPSS Score | No data |
| CISA KEV | No |
| Ransomware | Not confirmed |
Vulnerability Description
SAP NetWeaver Application Server Java (Web Container) allows an unauthenticated attacker to craft a malicious HTTP logon request that manipulates file inclusion parameters, enabling path traversal and processing of the included file. Processing the included file could allow the attacker to view or modify sensitive information or render any part of the local system unavailable.
Required Actions
Apply vendor patches or mitigations as soon as available.
Who Is Affected?
This vulnerability affects the software identified in the CVE description. Check if your organization uses this software and requires updates.
Sources
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Related services and products
Frequently asked questions
What is the CVE-2026-40128 vulnerability?
CVE-2026-40128 is a security vulnerability discovered in SAP's NetWeaver Application Server Java. The vulnerability has been assigned a CVSS score of 9 (critical severity). Any organization using this product should immediately verify their exposure and take appropriate remediation steps.
Who is affected by CVE-2026-40128?
This vulnerability affects users of SAP's NetWeaver Application Server Java. Organizations using this solution should check whether their deployed version is vulnerable and apply available security patches or implement recommended workarounds.
How to protect against CVE-2026-40128?
Apply security patches released by SAP or implement recommended workarounds. Regular vulnerability monitoring and prompt patch deployment are essential for effective protection against this type of threat.
What is the risk level of CVE-2026-40128?
The vulnerability has a CVSS score of 9 (critical severity). Successful exploitation could lead to compromise of organizational systems and data.
