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SAP NetWeaver AS ABAP XML Signature Wrapping in SAML Authentication (3746332)

critical Nessus Plugin ID 320858

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Synopsis

The remote SAP NetWeaver ABAP server is affected by an XML signature wrapping vulnerability.

Description

The version of SAP NetWeaver AS ABAP and ABAP Platform detected on the remote host is affected by an XML signature wrapping vulnerability in SAML authentication as referenced in SAP Security Note 3746332:

 - SAP NetWeaver Application Server ABAP and ABAP Platform allows an authenticated attacker with normal privileges to obtain a valid signed message and send modified signed XML documents to the verifier. This may result in acceptance of tampered identity information leading to unauthorized access to sensitive user data and potential disruption of normal system usage. This causes a high impact on confidentiality, integrity and availability of the application. (CVE-2026-44748)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Apply the appropriate patch according to the vendor advisory.

See Also

https://me.sap.com/notes/3746332

Plugin Details

Severity: Critical

ID: 320858

File Name: sap_netweaver_as_abap_3746332.nasl

Version: 1.2

Type: Remote

Family: Web Servers

Published: 6/12/2026

Updated: 6/15/2026

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.19

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-44748

CVSS v3

Risk Factor: Critical

Base Score: 9.9

Temporal Score: 8.6

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:sap:netweaver_application_server

Required KB Items: Settings/ParanoidReport, installed_sw/SAP Netweaver Application Server (AS)

Exploit Ease: No known exploits are available

Patch Publication Date: 6/9/2026

Vulnerability Publication Date: 6/9/2026

Reference Information

CVE: CVE-2026-44748

IAVA: 2026-A-0556