CVE-2026-58247: SAP ABAP Platform Information Disclosure

CVE-2026-58247 Overview

CVE-2026-58247 affects the SAP ABAP Platform and allows an unauthenticated remote attacker to send a specially crafted request to an internal component. The flaw exposes limited, non-sensitive data from previously used memory. This is an information disclosure issue rooted in improper initialization of memory before use, tracked as [CWE-908]. The vulnerability does not affect integrity or availability. SAP addressed the issue as part of its Security Patch Day release, documented in SAP Note 3756674.

Critical Impact
Unauthenticated network attackers can retrieve residual memory contents from an internal SAP ABAP Platform component, leaking limited data across requests.

Affected Products

SAP ABAP Platform (specific versions listed in vendor advisory)
Deployments exposing the affected internal component over the network
SAP environments that have not applied the fix in SAP Note 3756674

Discovery Timeline

2026-08-11 - CVE-2026-58247 published to NVD
2026-08-11 - SAP Security Patch Day advisory released via SAP Note 3756674
2026-08-11 - Last updated in NVD database

Technical Details for CVE-2026-58247

Vulnerability Analysis

The vulnerability originates in an internal component of the SAP ABAP Platform that processes network-reachable requests without authentication. When a specially crafted request is received, the component returns data derived from memory regions that were not properly initialized before use. Because the memory was previously allocated to other operations, its contents may include remnants of earlier processing. According to SAP, the disclosed data is limited and non-sensitive. The Exploit Prediction Scoring System (EPSS) currently places the probability of exploitation at a low tier, and no public proof-of-concept has been observed. Attackers can still leverage the flaw to probe internal component behavior or aid reconnaissance during broader campaigns against SAP landscapes.

Root Cause

The root cause is use of uninitialized resources, classified under [CWE-908]. The affected code path allocates a buffer or structure and returns it to the caller without ensuring all bytes are populated with intended data. Residual memory content is therefore included in the response.

Attack Vector

Exploitation requires network access to the SAP ABAP Platform component that handles the vulnerable request path. The attacker does not need credentials, does not need user interaction, and does not need to bypass access controls. A single crafted request is sufficient to trigger the disclosure.

No verified public exploit code is available. Refer to SAP Note 3756674 for the authoritative technical description.

Detection Methods for CVE-2026-58247

Indicators of Compromise

Anomalous unauthenticated requests targeting internal ABAP component endpoints that are not typically exposed to end users.
Response payloads of unexpected size or containing non-printable bytes returned from ABAP internal services.
Repeated crafted requests from the same source attempting to enumerate memory contents.

Detection Strategies

Enable ABAP application-layer logging on internal components and forward events to a centralized SIEM for correlation.
Baseline normal request patterns to the affected component and alert on unauthenticated calls or malformed request structures.
Correlate SAP audit logs with network telemetry to identify pre-authentication probing of ABAP endpoints.

Monitoring Recommendations

Monitor perimeter and internal network access to SAP systems for unexpected traffic reaching internal component ports.
Track user agents and request signatures against the ABAP Platform for deviations from known clients.
Review SAP Solution Manager and security audit log outputs weekly for suspicious unauthenticated access attempts.

How to Mitigate CVE-2026-58247

Immediate Actions Required

Apply the SAP-supplied patch referenced in SAP Note 3756674 during the next available maintenance window.
Inventory all SAP ABAP Platform instances and confirm patch status against the SAP Security Patch Day list.
Restrict network exposure of internal ABAP components to trusted management networks only.

Patch Information

SAP released the fix as part of its Security Patch Day. Administrators should download and apply the note through the SAP support portal. See SAP Security Patch Day for the full advisory listing and SAP Note 3756674 for the specific correction instructions.

Workarounds

Use network access control lists or firewall rules to block untrusted sources from reaching the affected ABAP component.
Place SAP systems behind a reverse proxy or SAP Web Dispatcher configured to reject requests to internal endpoints.
Where feasible, disable exposure of the vulnerable internal service until the patch is applied.

bash

# Example: restrict access to SAP ABAP internal ports at the host firewall
iptables -A INPUT -p tcp --dport 3300 -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport 3300 -j DROP