Review reviewCritical

CVE-2026-27671

SAP_SE SAP NetWeaver AS ABAP and ABAP Platform

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: 9.8
EPSS: 0.44%
CISA KEV: Not listed
Published: 2026.06.09

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.44%

Technical severityCVSS 9.8

Vulnerability overview

Affected product and versions

Product: SAP_SE SAP NetWeaver AS ABAP and ABAP Platform
Affected versions: >= KRNL64NUC 7.22, >= 7.22EXT, >= KRNL64UC 7.22, >= 722EXT, >= 7.53, >= KERNEL 7.22, >= 7.54, >= 7.77, >= 7.89, >= 7.93, >= 9.16, >= 9.18, >= 91.9
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that SAP_SE SAP NetWeaver AS ABAP and ABAP Platform and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-121