---
id: CVE-2026-66768
title: >-
  SAP GUI for Java does not correctly enforce the trust level policy for certain
  functions invoked from a connected backend system
summary: >-
  SAP GUI for Java does not correctly enforce the trust level policy for certain
  functions invoked from a connected backend system. A low-privileged attacker
  could exploit this weakness by manipulating a connected backend system to
  trigger…
severity: critical
cvss: 9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H'
cwe:
  - CWE-807
vendor: SAP_SE
product: SAP NetWeaver (SAP GUI for Java)
affected:
  - sap_netweaver_sap_gui_for_java BC-FES-JAV 8.10
published: '2026-09-08'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T05:17:27.537'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-66768'
references:
  - url: 'https://me.sap.com/notes/3781729'
    label: cna@sap.com
  - url: 'https://url.sap/sapsecuritypatchday'
    label: cna@sap.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-08T09:59:43.809998Z'
epss: 0.00614
epssPercentile: 0.47153
ingestedAt: '2026-09-08T15:33:26.981Z'
---

## Overview

SAP GUI for Java does not correctly enforce the trust level policy for certain functions invoked from a connected backend system. A low-privileged attacker could exploit this weakness by manipulating a connected backend system to trigger affected functionality. This could allow arbitrary command execution on the victim's machine, leading to a high impact on the confidentiality, integrity, and availability of the affected system.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.