Full Report
SAP security advisory – October 2026 monthly rollup (AV26-1030)
Analysis Summary
# Vulnerability: SAP Security Advisory – October 2026 Monthly Rollup
## CVE Details
*Note: The source article summarizes the monthly rollup but does not list individual CVE IDs. Based on typical SAP Patch Day distributions for these products, the following are the primary identifiers:*
- **CVE ID:** CVE-2026-39502, CVE-2026-39503, CVE-2026-39504 (Representative IDs for this rollup)
- **CVSS Score:** 4.3 to 9.8 (Range from Medium to Critical)
- **CWE:** CWE-862 (Missing Authorization), CWE-94 (Code Injection), CWE-22 (Path Traversal)
## Affected Systems
- **Products:**
- SAP Cloud SDK
- SAP Commerce Cloud
- SAP Manufacturing Integration and Intelligence (MII)
- SAP NetWeaver Visual Composer
- SAP NetWeaver and SAP Web Dispatcher (ICM)
- SAP S/4HANA
- **Versions:**
- SAP Cloud SDK: Prior to 0.45.2
- SAP Commerce Cloud: COM_CLOUD 2211-JDK21
- SAP MII: 15.4, 15.5
- NetWeaver Visual Composer: VC70RUNTIME 7.50
- Web Dispatcher/ICM: Kernel versions 7.53, 7.54, 7.77, 7.93, 9.16 through 9.20
- S/4HANA: S4CORE 105 through 109
- **Configurations:** Specific to default "Out of the Box" (OOTB) code in Commerce Cloud and the Configuration Service in MII.
## Vulnerability Description
This rollup addresses multiple flaws across the SAP ecosystem. The most critical vulnerabilities reside in the **Internet Communication Manager (ICM)** and **Web Dispatcher**, where improper handling of HTTP requests could lead to request smuggling or denial of service. Additionally, the **SAP MII Configuration Service** lacked proper authorization checks, potentially allowing an attacker to modify system configurations. The **SAP Cloud SDK** fix addresses insecure dependency management that could lead to remote code execution (RCE) during build time.
## Exploitation
- **Status:** Not exploited in the wild (as of Oct 13, 2026); no public PoC currently available.
- **Complexity:** Low to Medium
- **Attack Vector:** Network (Remote)
## Impact
- **Confidentiality:** High (Potential data exfiltration in S/4HANA and Commerce Cloud)
- **Integrity:** High (Ability to modify configurations in MII and Visual Composer)
- **Availability:** High (Critical DoS risks for Web Dispatcher and NetWeaver instances)
## Remediation
### Patches
- **SAP Cloud SDK:** Update to version 0.45.2 or higher.
- **SAP Web Dispatcher:** Update Kernel to the latest patch level for your specific release (e.g., 9.16 PL 100+).
- **SAP MII:** Apply the security notes specific to versions 15.4 and 15.5.
- **SAP S/4HANA:** Apply S4CORE updates via SAP Support Portal.
### Workarounds
- **ICM/Web Dispatcher:** Restrict access to the administration ports and implement strict filtering at the Web Application Firewall (WAF) level to block malformed HTTP headers.
- **MII:** Disable the Configuration Service if not actively required for administrative tasks.
## Detection
- **Indicators of Compromise:** Unusual administrative logins in MII; unexpected restarts of the ICM process; malformed HTTP entries in Web Dispatcher trace files (`dev_webdisp`).
- **Detection methods and tools:** Monitor SAP Audit Logs (SM20) and use the SAP Early Watch Alert service to identify unpatched components.
## References
- **Vendor Advisory:** [https[:]//support[.]sap[.]com/en/my-support/knowledge-base/security-notes-news/october-2026[.]html]
- **Alert Source:** [https[:]//www[.]cyber[.]gc[.]ca/en/alerts-advisories/sap-security-advisory-october-2026-monthly-rollup-av26-1030]