Missing Authentication check in SAP NetWeaver (Message Server)

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-58240
StatePUBLISHED
Assignersap
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-08 01:17:51 UTC
Updated2026-09-08 01:17:51 UTC
DescriptionSAP NetWeaver Message Server does not sufficiently validate the authenticity of internal application server components during registration. An unauthenticated attacker with network access to the affected service could exploit this weakness to register an unauthorized component and potentially perform unauthorized actions within the application environment, resulting in a high impact on the confidentiality, integrity, and availability of the affected system.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-308 | CWE-308 CWE-308: Use of Single-factor Authentication

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA SAP SE SAP NetWeaver Message Server affected KERNEL 9.16 Not specified
CNA SAP SE SAP NetWeaver Message Server affected 9.18 Not specified
CNA SAP SE SAP NetWeaver Message Server affected 9.19 Not specified
CNA SAP SE SAP NetWeaver Message Server affected 9.20 Not specified

References

ReferenceSourceLinkTags
url.sap/sapsecuritypatchday [email protected] url.sap
me.sap.com/notes/3759472 [email protected] me.sap.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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