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Vulnerability record · CVE-2026-27671 · published 9 June 2026

CVE-2026-27671: Stack-based buffer overflow vulnerability

Due to improper RFC protocol validation in the SAP Kernel used by the Application Server ABAP of SAP NetWeaver and ABAP Platform, an unauthenticated attacker can send a crafted RFC request that exploits logical errors in memory management, leading to memory corruption. This could lead to a high impact on the confidentiality, integrity, and availability of the application.

9.8 CVSS 3.1 Critical EPSS 0.62% · top 52.2% CWE-121 · Stack-based buffer overflow Awaiting Analysis
9.8CVSS 3.1 base score
0.62%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
23 Jul 2026Last modified by NVD

Description

Due to improper RFC protocol validation in the SAP Kernel used by the Application Server ABAP of SAP NetWeaver and ABAP Platform, an unauthenticated attacker can send a crafted RFC request that exploits logical errors in memory management, leading to memory corruption. This could lead to a high impact on the confidentiality, integrity, and availability of the application.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://me.sap.com/notes/3717897
https://url.sap/sapsecuritypatchday

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Source: NIST National Vulnerability Database (record CVE-2026-27671), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.