SB2026060922 - Multiple vulnerabilities in SAP NetWeaver AS ABAP

Description

This security bulletin contains information about 3 vulnerabilities.

1) Missing authorization (CVE-ID: CVE-2026-40128)

CWE-ID: CWE-862 - Missing Authorization

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote user to bypass authorization checks.

The vulnerability exists due to missing authorization checks. A remote authenticated user can modify elements they should not have access to. 

2) Buffer overflow (CVE-ID: CVE-2026-27671)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error. A remote attacker can send specially crafted traffic to the server, trigger memory corruption and execute arbitrary code on the target system.

3) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2026-44748)

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote user to compromise the affected system.

The vulnerability exists due to XML signature wrapping during SAML authentication. A remote user can compromise the affected system.

Remediation

Install update from vendor's website.

References

• https://support.sap.com/en/my-support/knowledge-base/security-notes-news/june-2026.html
• https://me.sap.com/notes/3735546
• https://me.sap.com/notes/3717897
• https://me.sap.com/notes/3746332