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SAP NetWeaver ABAP CVE-2026-58236

| EUVDEUVD-2026-55868 MEDIUM
OS Command Injection (CWE-78)
2026-08-11 sap GHSA-9gvf-fp5r-4gqr
5.5
CVSS 3.1 · Vendor: sap
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain high-privilege SAP account credentials
  2. Delivery
    Connect to SAP system over network (AV:N)
  3. Exploit
    Invoke vulnerable internal ABAP code path
  4. Execution
    Bypass absent security control on OS execution (CWE-78)
  5. Persist
    Execute arbitrary OS-level commands
  6. Impact
    Write to OS filesystem or halt SAP services (A:H)

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization OS command sanitization, avoid shell exec
MITRE ATT&CK

2 techniques across 1 tactic: Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires network access to a SAP NetWeaver AS ABAP system and a user account with high SAP privileges (confirmed by CVSS PR:H) sufficient to reach and execute the vulnerable internal code path where OS-level command injection is possible. The specific transaction, report, or function module entrypoint is not disclosed in available data. No non-default configuration is described as a prerequisite - the vulnerability resides in the standard ABAP runtime across the listed kernel versions. Exploitation is bounded by the high-privilege requirement: unauthenticated users and low-privilege end-user accounts cannot trigger the flaw. The impact is limited to OS-level writes and SAP service availability; no confidentiality breach is expected, limiting the incentive for data-theft-motivated attackers relative to sabotage or denial-of-service actors.

Impact

The CVSS base score of 5.5 is consistent with the PR:H prerequisite that substantially constrains exploitation to actors already holding high-privilege SAP credentials. The AV:N/AC:L combination means that once authenticated at the required privilege level, the exploit path is straightforward - no race conditions or complex preconditions apply. The high availability impact (A:H) is the dominant risk signal: a successful attack can halt all SAP work processes, causing immediate business disruption in environments where SAP underpins ERP, finance, or supply chain operations; even a mid-sized municipal IT team in leszno running SAP for public administration should treat this as an urgent patching item despite the moderate composite score. No EPSS probability data was provided; the absence of a KEV listing and confirmed public POC suggests exploitation has not been broadly observed, but insider threats and post-compromise scenarios from compromised admin accounts remain realistic vectors. The SSVC framework signals: exploitation is plausible but not confirmed; the attack is not automatable without valid high-privilege credentials; technical impact is partial given the absence of confidentiality exposure. The integrity impact is rated low - OS writes are possible but the scope is not fully defined - which slightly tempers overall risk compared to a full confidentiality-integrity-availability trifecta.

Exploit ScenarioDerived

An attacker who has obtained or compromised a high-privilege SAP account - for example via credential theft, insider access, or lateral movement from another compromised system - connects to the SAP application server over the network and invokes the vulnerable internal ABAP code path, passing crafted input that bypasses the missing security control. The injected OS commands could terminate SAP work processes, causing a full system outage, or write attacker-controlled content to the server filesystem. No public proof-of-concept is known at time of analysis, making opportunistic mass exploitation unlikely, but targeted attacks by insiders or post-compromise actors remain plausible.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Aug 11, 2026

OS command injection in SAP NetWeaver Application Server ABAP and ABAP Platform enables an attacker holding high-privilege credentials to bypass missing security controls on an internal ABAP code path and execute arbitrary commands on the underlying operating system. Affected releases span kernel versions 7.22 through 9.16, placing a broad range of production SAP landscapes at risk of service disruption or unauthorized OS-level writes. No public exploit code has been identified and the vulnerability is not listed in CISA KEV at time of analysis, though the high availability impact (A:H) makes it a meaningful patch priority for SAP Basis teams.

RemediationAI

Apply the fix detailed in SAP Security Note 3745182, available at https://me.sap.com/notes/3745182 via the SAP Support Portal; this note was released as part of SAP's regular Security Patch Day cycle, details of which are published at https://url.sap/sapsecuritypatchday. The exact corrected kernel patch level or Support Package number is not independently confirmed from the provided data and must be obtained directly from the note. As a compensating control pending patch deployment, restrict assignment of high-privilege profiles (such as SAP_ALL or any profile granting authorization to the relevant basis objects) strictly to essential accounts, removing access from service or batch accounts where not operationally required - note that over-restriction of basis authorizations can break administrative workflows and must be coordinated with SAP Basis teams. Additionally, enable and review SAP Security Audit Log (SM19/RSAU_CONFIG) for anomalous OS-command-class events, which can provide detection capability even if it does not prevent exploitation. Network-level controls limiting SAP system port exposure to trusted administrative networks reduce attack surface by preventing remote exploitation from non-privileged network segments.

Affected VersionsENISA

SAP NetWeaver Application Server ABAP and ABAP Platform 9.16
SAP NetWeaver Application Server ABAP and ABAP Platform 7.54
SAP NetWeaver Application Server ABAP and ABAP Platform 7.93
SAP NetWeaver Application Server ABAP and ABAP Platform KRNL64UC 7.22
SAP NetWeaver Application Server ABAP and ABAP Platform KRNL64NUC 7.22
SAP NetWeaver Application Server ABAP and ABAP Platform KERNEL 7.22
SAP NetWeaver Application Server ABAP and ABAP Platform 7.22EXT
SAP NetWeaver Application Server ABAP and ABAP Platform 7.53
SAP NetWeaver Application Server ABAP and ABAP Platform 7.77

Affected Packages

euvd sap_netweaver_application_server_abap_and_abap_platform no fix
euvd sap_netweaver_application_server_abap_and_abap_platform_kernel no fix
euvd sap_netweaver_application_server_abap_and_abap_platform_krnl64nuc no fix
euvd sap_netweaver_application_server_abap_and_abap_platform_krnl64uc no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 4 packages in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vulnerability is classified under CWE-78 (Improper Neutralization of Special Elements Used in an OS Command - OS Command Injection), indicating that attacker-controlled input reaches an OS-level execution point without adequate sanitization or authorization enforcement. The affected component is the SAP NetWeaver Application Server ABAP runtime and ABAP Platform, identified by CPE cpe:2.3:a:sap_se:sap_netweaver_application_server_abap_and_abap_platform:*:*:*:*:*:*:*:*. The flaw exists on an internal code path within the ABAP kernel layer - the specific transaction, function module, or RFC interface is not disclosed in available data - where a security control designed to prevent OS interaction is absent or insufficiently enforced, allowing crafted ABAP-level input to pass through to OS-level execution. The wildcard CPE version field confirms the issue spans multiple kernel variants including KRNL64UC, KRNL64NUC, and standard KERNEL builds.

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Severity by source

Vendor (sap) PRIMARY 5.5 MEDIUM
AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
vuln.today AI 5.5 MEDIUM

PR:H confirmed by description requiring high privileges; A:H reflects ability to halt the SAP system; C:N as no confidentiality impact is described.

3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (sap).

CVSS VectorVendor: sap

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High

DescriptionCVE.org

SAP NetWeaver Application Server ABAP and ABAP Platform allow an attacker with high privileges to bypass missing security controls on an internal code path leading to operating system command execution. Successful exploitation could allow the attacker to execute OS-level commands that write to the operating system or stop the SAP system, resulting in no impact on confidentiality, low impact on integrity, and high impact on availability.

Threat Intelligence Overview

EPSS Score
0.4%
Top 70% exploitable
Prevalence
High
widely deployed ERP and application platform across large enterprises globally
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
High
Technical Impact
Partial

Priority Score

28
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +28
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

Related Vulnerabilities in SAP NetWeaver AS ABAP Memory and Command Flaws

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