SB2026021028 - Multiple vulnerabilities in SAP NetWeaver AS ABAP and SAP ABAP Platform

Description

This security bulletin contains information about 3 vulnerabilities.

1) Out-of-bounds read (CVE-ID: CVE-2026-24320)

CWE-ID: CWE-125 - Out-of-bounds read

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

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition. A remote user can send a specially crafted request to the server, trigger an out-of-bounds read error and read contents of memory on the system.

2) Improper verification of cryptographic signature (CVE-ID: CVE-2026-23687)

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:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote user to escalate privileges within the application.

The vulnerability exists due to improper verification of signature when parsing XML code. A remote authenticated user can bypass implemented verification checks and execute arbitrary code with elevated privileges. 

3) Missing authorization (CVE-ID: CVE-2026-0509)

CWE-ID: CWE-862 - Missing Authorization

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

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

The vulnerability exists due to missing authorization checks. A remote authenticated user can execute arbitrary code on the server.

Remediation

Install update from vendor's website.

References

• https://support.sap.com/en/my-support/knowledge-base/security-notes-news/february-2026.html
• https://me.sap.com/notes/3678313
• https://me.sap.com/notes/3697567
• https://me.sap.com/notes/3674774