Summary
| Parameter | Value |
|---|---|
| CVE ID | CVE-2026-109795 |
| Alert Source | GitHub Advisory - Critical Vulnerability |
| CVE Publication Year | 2026 |
| Date Published | 2026-11-10 |
| Vendor | SAP |
| Product | NetWeaver |
| Vulnerability Type | code injection and execution (CWE-94) |
| SAP Note | 3834842 |
| CVSS Score | 9.9 (critical) |
| EPSS Score | No data |
| CISA KEV | No |
| Ransomware | Not confirmed |
Vulnerability Description
Source: NVD, SAP
SAP NetWeaver does not perform necessary authorization checks and lacks sufficient input validation in certain remote-enabled functionality. An attacker with low privileges could send specially crafted input through a remote interface to inject and execute arbitrary code within the affected system. Successful exploitation could extend the attacker’s reach beyond the vulnerable component, resulting in a high impact on confidentiality, integrity and availability.
The flaw was published as part of the November 2026 SAP Security Patch Day. The attack requires an account with low privileges.
Required Actions
- Apply the fix from SAP Note 3834842 (SAP Security Patch Day, November 2026).
- Until patched, restrict network access to the system’s remote interfaces (including RFC) to trusted systems and administrative networks.
- Review accounts that can call remote-enabled functions, especially technical and communication users, and remove unnecessary authorizations.
Who Is Affected?
This vulnerability affects SAP NetWeaver. NVD provides no CPE configuration; affected versions and support packages are listed in SAP Note 3834842 (requires an SAP for Me account). SAP systems are mainly used by mid-sized and large enterprises (ERP, S/4HANA, NetWeaver platforms), so also check systems operated by partners and service providers.
The same Patch Day covered eight other critical SAP flaws: CVE-2026-109798, CVE-2026-109803, CVE-2026-120017, CVE-2026-76964, CVE-2026-76965, CVE-2026-89103, CVE-2026-89119, CVE-2026-89126.
Sources
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Frequently asked questions
What is the CVE-2026-109795 vulnerability?
CVE-2026-109795 is a vulnerability in SAP NetWeaver — code injection and execution — rated CVSS 9.9 (critical severity). SAP released a fix in Note 3834842 as part of the November 2026 SAP Security Patch Day.
Does exploiting CVE-2026-109795 require authentication?
According to the vendor's CVSS assessment, the attack requires an account with low privileges. The attack is carried out over the network.
How to protect against CVE-2026-109795?
Apply the fix from SAP Note 3834842 and, until it is deployed, restrict network access to the affected component. The note lists affected versions and any available workarounds.
Who is affected by CVE-2026-109795?
It affects organizations running SAP NetWeaver, typically mid-sized and large enterprises with SAP ERP or S/4HANA and the related NetWeaver components.
