Advisory

A note with CVSS 4.3 for component FI-FIO-AR-PAY was released by SAP on 19.11.2025. The correction/advisory 3669608 was described with "3669608 - [CVE-2026-66764] Missing Authorization check in SAP S/4 HANA (Reprocess Bank Statement Items)" and affects the system type ABAP.

A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as monthly patch process.

The vulnerability addressed is missing authorization check within ABAP.

Missing authority checks are still the most common security defect related to authorizations in custom code. Since SAP uses an explicit authorization model, an authority checks must be coded in order to be executed. If an explicit check is not coded, all users have access. This type of vulnerability not only exists in SAP standard it also exists in customer coding. Check your custom developments for vulnerabilities that pose a risk to your systems. SecurityBridge helps detect code vulnerabilities before they are implemented in production.

Risk specification

Reprocess Bank Statement Items in SAP S/4HANA allows an authenticated attacker to use processing rules that have not been shared with them, resulting in unauthorized access to restricted data and privilege escalation.

Solution

Missing authorization checks have been added when accessing processing rules.

Affected System

The advisory 3669608 describes a problem within an ABAP based systems of a specific version. Affected versions are described below. ABAP software is deployed in various software components and is widely used within the SAP product portfolio.

SAP NetWeaver Application Server (formally known as SAP Web Application Server) is a building block of SAP NetWeaver. It is the foundation for most software products developed by SAP SE. SAP NetWeaver systems exist with Java and/or ABAP stacks. The advisory could be relevant for single and dual-stack ABAP installations.

The advisory is valid for

S4CORE 104 ⁸¹
S4CORE 105 ⁶⁹
S4CORE 106 ⁶⁰
S4CORE 107 ⁵⁵
S4CORE 108 ⁴⁹
S4CORE 109 ¹⁹

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The advisories found within the SecurityBridge advisory are generated and continuously enriched by our Team at SecurityBridge and affiliated security consultants, partners, customers of the SecurityBridge Platform, SAP support, and advisory groups.

We do not disclose zero-day vulnerabilities unless a security patch has been made available to the public. In such case, the platform only provides details on which version or signature updates are available within the SecurityBridge platform in order to monitor or measure the vulnerability.

In accordance with SAP guidelines, SecurityBridge only discloses issues where the fixing security note has been released. The vulnerability platform makes no references to available exploits or Proof of Concepts (PoC). Advisories and vulnerabilities will always mention the fixing security note or hints to the corresponding SAP documentation.

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Notifications

Advisory

Risk specification

Solution

Affected System

Disclaimer