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 3685286 was released on 09.12.2025 and deals with "[CVE-2025-42928] Deserialization Vulnerability in SAP jConnect - SDK for ASE" within SAP Adaptive Server Enterprise (ASE) . We advice you to follow the instructions, to resolve remote code execution vulnerability with a hot news potential for exploitation in component BC-SYB-SDK.

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

Risk specification

The SDK for SAP ASE allows an authenticated user with high privileges to exploit a deserialization vulnerability in SAP jConnect, which can result in remote code execution on the target system.

Solution

The solution disables the serialization and deserialization of vulnerable input values in SAP jConnect for the JDBC driver.

The advisory is valid for

SYBASE_SOFTWARE_DEVELOPER_KIT 16.0.4
SYBASE_SOFTWARE_DEVELOPER_KIT 16.1

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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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