CVE-2026-27678: CWE-862: Missing Authorization in SAP_SE SAP S/4HANA Backend OData Service (Manage Reference Structures)
CVE-2026-27678 is a vulnerability in the SAP S/4HANA backend OData Service (Manage Reference Structures) caused by missing authorization checks. This flaw allows an attacker with limited privileges to update and delete child entities through exposed OData services without proper authorization. The vulnerability impacts data integrity but does not affect confidentiality or availability. It has a CVSS score of 6. 5, indicating medium severity. No official patch or remediation guidance has been provided yet. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
The vulnerability CVE-2026-27678 in SAP S/4HANA Backend OData Service (Manage Reference Structures) arises from missing authorization checks, classified under CWE-862. This allows an attacker with low privileges to modify or delete child entities via the OData service endpoints without proper permission validation. The issue affects version S4CORE 109. The CVSS 3.1 base score is 6.5 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N), reflecting a network attack vector with low attack complexity and requiring low privileges, no user interaction, unchanged scope, no confidentiality or availability impact, but high integrity impact. No patch or official remediation level is currently documented, and the service is not cloud-hosted, so remediation depends on vendor updates.
Potential Impact
An attacker with low privileges can exploit this vulnerability to update or delete child entities in the SAP S/4HANA backend OData service without proper authorization. This compromises the integrity of the affected data but does not impact confidentiality or availability. There are no known exploits in the wild, and the vulnerability is rated medium severity with a CVSS score of 6.5.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or remediation level is provided, organizations should monitor SAP security advisories for updates. Until a fix is available, restrict access to the affected OData services to trusted users only and review authorization configurations to minimize exposure.
CVE-2026-27678: CWE-862: Missing Authorization in SAP_SE SAP S/4HANA Backend OData Service (Manage Reference Structures)
Description
CVE-2026-27678 is a vulnerability in the SAP S/4HANA backend OData Service (Manage Reference Structures) caused by missing authorization checks. This flaw allows an attacker with limited privileges to update and delete child entities through exposed OData services without proper authorization. The vulnerability impacts data integrity but does not affect confidentiality or availability. It has a CVSS score of 6. 5, indicating medium severity. No official patch or remediation guidance has been provided yet. There are no known exploits in the wild at this time.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-27678 in SAP S/4HANA Backend OData Service (Manage Reference Structures) arises from missing authorization checks, classified under CWE-862. This allows an attacker with low privileges to modify or delete child entities via the OData service endpoints without proper permission validation. The issue affects version S4CORE 109. The CVSS 3.1 base score is 6.5 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N), reflecting a network attack vector with low attack complexity and requiring low privileges, no user interaction, unchanged scope, no confidentiality or availability impact, but high integrity impact. No patch or official remediation level is currently documented, and the service is not cloud-hosted, so remediation depends on vendor updates.
Potential Impact
An attacker with low privileges can exploit this vulnerability to update or delete child entities in the SAP S/4HANA backend OData service without proper authorization. This compromises the integrity of the affected data but does not impact confidentiality or availability. There are no known exploits in the wild, and the vulnerability is rated medium severity with a CVSS score of 6.5.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch or remediation level is provided, organizations should monitor SAP security advisories for updates. Until a fix is available, restrict access to the affected OData services to trusted users only and review authorization configurations to minimize exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- sap
- Date Reserved
- 2026-02-23T17:50:10.513Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69dd877482d89c981f91f538
Added to database: 4/14/2026, 12:16:52 AM
Last enriched: 4/21/2026, 6:25:17 AM
Last updated: 5/28/2026, 10:46:00 PM
Views: 48
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