What is CVE-2026-27671?

CVE-2026-27671 is a critical-severity vulnerability, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-06-09.

How severe is CVE-2026-27671?

Critical severity. CVSS v3 base score is 9.8 out of 10.

CVE-2026-27671

CVE-2026-27671

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…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

cna@sap.com
cna@sap.com

Frequently asked questions

What is CVE-2026-27671?: CVE-2026-27671 is a critical-severity vulnerability, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-06-09.
How severe is CVE-2026-27671?: Critical severity. CVSS v3 base score is 9.8 out of 10.