CVE-2026-76963 Overview
CVE-2026-76963 is a missing authorization vulnerability in the Application Server ABAP component of SAP NetWeaver and SAP ABAP Platform. An authenticated attacker with low privileges can access sensitive system configuration information without proper authorization checks. The flaw exposes security-relevant settings and internal system details to any authenticated user on the network. Successful exploitation impacts confidentiality only, while integrity and availability remain unaffected. The vulnerability is classified under CWE-862: Missing Authorization.
Critical Impact
Authenticated attackers can retrieve security-relevant configuration data from SAP NetWeaver ABAP systems, which may facilitate reconnaissance for follow-on attacks against enterprise SAP landscapes.
Affected Products
- SAP NetWeaver Application Server ABAP
- SAP ABAP Platform
- Refer to SAP Note #3772838 for the complete list of affected versions
Discovery Timeline
- 2026-09-08 - CVE CVE-2026-76963 published to NVD as part of SAP Security Patch Day
- 2026-09-08 - Last updated in NVD database
Technical Details for CVE-2026-76963
Vulnerability Analysis
The vulnerability resides in the Application Server ABAP layer of SAP NetWeaver and the SAP ABAP Platform. The affected functionality fails to perform authorization checks before returning system configuration data to the caller. Any authenticated user, regardless of assigned role or authorization profile, can invoke the impacted functionality and retrieve sensitive settings.
The exposed data includes security-relevant configuration and internal system details. While the disclosure does not directly allow code execution or data modification, it materially aids attackers in mapping the target environment. Reconnaissance data obtained through this flaw can support privilege escalation, credential-focused attacks, and targeted exploitation of other SAP vulnerabilities.
Root Cause
The root cause is a missing authorization check [CWE-862]. The affected ABAP function module or service does not validate whether the calling user holds the authorization object required to view configuration data. SAP applications typically enforce access using AUTHORITY-CHECK statements against S_* authorization objects. In this case, the enforcement is either absent or logically bypassed for the impacted code path.
Attack Vector
Exploitation requires network access to the SAP Application Server and valid authenticated credentials with low privileges. No user interaction is required. An attacker with a standard SAP dialog or RFC user account can issue the impacted request and receive configuration data in the response. Refer to SAP Note #3772838 and the SAP Security Patch Day portal for detailed technical guidance on the affected function and request paths.
Detection Methods for CVE-2026-76963
Indicators of Compromise
- Unusual RFC or HTTP requests from low-privileged SAP user accounts targeting configuration or system information services
- Elevated volumes of read requests against ABAP system information functions from a single user or workstation
- Access to configuration data from user accounts that historically have not queried such information
Detection Strategies
- Enable and review SAP Security Audit Log (SM19/RSAU_CONFIG) entries for successful RFC calls and report executions by non-administrative users
- Correlate SAP Gateway logs and HTTP access logs to identify anomalous access patterns to configuration endpoints
- Baseline normal usage patterns of configuration-related function modules and alert on deviations
Monitoring Recommendations
- Forward SAP Security Audit Log, Gateway log, and ICM log data to a centralized SIEM for correlation and long-term retention
- Monitor authentication events for low-privileged accounts that suddenly enumerate system data
- Track application of SAP Security Patch Day notes across the SAP landscape and alert on unpatched systems
How to Mitigate CVE-2026-76963
Immediate Actions Required
- Apply the patch referenced in SAP Note #3772838 to all affected SAP NetWeaver Application Server ABAP and SAP ABAP Platform systems
- Review authorization assignments and remove unnecessary access from low-privileged accounts
- Audit SAP Security Audit Log entries for prior access to configuration data by non-administrative users
Patch Information
SAP released the fix through the September 2026 SAP Security Patch Day. Administrators must download and apply SAP Note #3772838 using the SAP Note Assistant (SNOTE) or as part of a Support Package upgrade. Consult the SAP Security Patch Day portal for the complete advisory and version matrix.
Workarounds
- No official workaround is documented; patching is the required remediation path
- Restrict network access to SAP Application Servers using firewall rules and SAProuter to limit exposure to trusted networks
- Enforce least-privilege principles in role design and remove unused RFC or dialog access from service accounts
# Verify SAP Note application status using the SAP Note Assistant transaction
# In SAP GUI:
# 1. Run transaction SNOTE
# 2. Menu: Goto -> SAP Note Browser
# 3. Search for Note number: 3772838
# 4. Confirm status is "Implemented" or included in the current Support Package
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
