PatchSiren cyber security CVE debrief
CVE-2026-27671 SAP_SE CVE debrief
A critical vulnerability, CVE-2026-27671, has been identified in the SAP Kernel used by the Application Server ABAP of SAP NetWeaver and ABAP Platform. This vulnerability allows an unauthenticated attacker to send a crafted RFC request that exploits logical errors in memory management, leading to memory corruption. This could have a high impact on the confidentiality, integrity, and availability of the application, with a CVSS score of 9.8.
- Vendor
- SAP_SE
- Product
- SAP NetWeaver AS ABAP and ABAP Platform
- CVSS
- CRITICAL 9.8
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-09
- Original CVE updated
- 2026-06-09
- Advisory published
- 2026-06-09
- Advisory updated
- 2026-06-09
Who should care
Administrators and security teams responsible for SAP NetWeaver and ABAP Platform deployments should be aware of this vulnerability and take immediate action to mitigate the risk.
Technical summary
The vulnerability is caused by improper RFC protocol validation in the SAP Kernel. An unauthenticated attacker can exploit this vulnerability by sending a crafted RFC request, which can lead to memory corruption.
Defensive priority
High
Recommended defensive actions
- Apply the necessary patches and updates as recommended by SAP.
- Review and update RFC protocol validation in the SAP Kernel.
- Monitor and restrict access to sensitive areas of the application.
Evidence notes
The CVE-2026-27671 vulnerability has been confirmed by SAP, and patches are available. For more information, refer to resourceLinkAnnotations [ref-4] and [ref-5].
Official resources
CVE-2026-27671 was published on 2026-06-09T01:16:45.903Z and modified on 2026-06-09T02:08:28.150Z.