External risk intelligence

SAP NetWeaver AS ABAP OS Command Injection

CVE advisorySeverity: CRITICAL (CVSS 9.9)

CVE-2026-76965

SAP NetWeaver Application Server is commonly deployed as a core enterprise platform, frequently serving as an internet-facing application server or integration gateway. While the vulnerability requires low-privileged access, the product role as a primary application server often results in exposure to external network environments or wide internal segments, making reachable deployments common.

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This advisory concerns a critical vulnerability in SAP NetWeaver Application Server ABAP and ABAP Platform, which allows a low-privileged attacker to execute arbitrary operating system commands on the host system. Successful exploitation could lead to a high impact on the confidentiality, integrity, and availability of affected systems, potentially affecting resources beyond the initial vulnerable component.

Unauthorized commands can be run on SAP systems.
Critical SAP systems face high-impact risk.
Confirm SAP system relevance and exposure.

Attack Path

How an attacker could exploit the issue

An attacker with low privileges could exploit a missing authorization check in SAP NetWeaver Application Server ABAP and ABAP Platform. This allows them to trigger specific internal functions that can execute arbitrary operating system commands on the server. Successfully exploiting this vulnerability could lead to a high impact on the confidentiality, integrity, and availability of the system.

Entry condition: Low-privileged access.
Trigger point: Invoking affected internal functionality.
Resulting risk: Arbitrary OS command execution.

Live Threat

Current exploitation, exposure, and threat context

An attacker with low privileges could leverage this vulnerability in SAP NetWeaver Application Server ABAP and ABAP Platform to execute arbitrary operating system commands on the host. This could affect system resources beyond the immediate component, potentially impacting confidentiality, integrity, and availability.

Operating system commands on the host.
Invoking affected internal functionality.
High impact on system confidentiality, integrity, availability.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in SAP NetWeaver Application Server ABAP and ABAP Platform requires immediate attention from teams responsible for enterprise application management and infrastructure security. The first practical step is to identify all instances of the affected technology, determine their reachability and criticality, and then assign ownership for remediation planning.

Ownership: Application and platform owners.
Verify: Reachability and business criticality.
Action: Plan and coordinate remediation.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

Free EASM Trial See How Signal Works

Frequently asked questions

What is SAP NetWeaver Application Server ABAP?

It is a foundational software stack and runtime environment for SAP applications. Organizations use it as an enterprise-grade platform to build, host, and manage business-critical applications and integration processes, functioning as the core server infrastructure where custom and standard business logic executes.

How does CVE-2026-76965 enable command execution?

This vulnerability is classified as CWE-749, or Exposed Dangerous Method or Function. In this context, it means the software fails to perform necessary authorization checks on specific internal functions. Because these functions are not properly restricted, an attacker can misuse them to inject and run unauthorized commands directly on the server's underlying operating system.

Do I need administrator access to trigger this vulnerability?

No. The flaw does not require high-level administrative or superuser privileges to initiate. An attacker only needs low-privileged access to the system to invoke the vulnerable internal functionality. However, simply having access does not trigger the bug unless the attacker specifically reaches and interacts with the flawed internal methods.

Why should I care about the reachability of my SAP instances?

According to Halo Surface Signal, SAP NetWeaver is frequently deployed as an internet-facing application server or integration gateway, which often places it in reachable network environments. Because of this common role as a core enterprise platform, an instance might be exposed to broader network segments, increasing the potential risk of an attacker successfully reaching the vulnerable component.

What is the first step to address this CVE?

Begin by identifying all instances of SAP NetWeaver Application Server ABAP within your environment. Once you have a complete inventory, assess the business criticality of each system and verify its network reachability. This information allows you to prioritize systems for remediation planning and coordinate with the appropriate application owners.

References

me.sap.com/notes/3792735

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.