Advisory

SAP takes the security of its vast product portfolio very seriously and thus releases security fixes for vulnerabilities reported by external researchers and their customers every second Tuesday of the month.

SAP Note 3561045 was released on 11.03.2025 and deals with "[CVE-2025-26658] Broken Authentication in SAP Business One (Service Layer)" within SAP Business One. We advice you to follow the instructions, to resolve weak security function / cryptographic algorithm with a medium potential for exploitation in component SBO-CRO-SEC.

According to SAP Security Advisory team a workaround does not exist. It is advisable to implement the correction as part of maintenance.

Risk specification

The Service Layer in SAP Business One allows an unauthenticated attacker to impersonate other users due to insecure session UUID generation, resulting in the escalation of privileges and high impact on the confidentiality of the application.

Solution

SAP Business One now uses a secure method of session identifier generation.

The advisory is valid for

B1_ON_HANA 10.0 ²⁰
SAP-M-BO 10.0 ²²

Releated advisories

Disclaimer

SecurityBridge takes the security of SAP products very seriously. We very much encourage the responsible disclosure of security vulnerabilities. If you have detected a vulnerability concerning one of the SAP software products – either in the latest or in a former product version follow the guidelines and processes in accordance with the SAP portal page “Report a Security Vulnerability to SAP”.

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

Affected system SAP Business One

CVSS 6.8

Component SBO-CRO-SEC

Patch Day2025-03

Released on2025/03/11

SAP Note 3561045

Workaround No

Advisory

Risk specification

Solution

Disclaimer

_{Affected system}
SAP Business One

_CVSS
6.8

_Component
SBO-CRO-SEC

_{Patch Day}
2025-03

_{Released
on}
2025/03/11

_{SAP Note}
3561045

_Workaround
No