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Vulnerability record · CVE-2026-58240 · published 8 September 2026

CVE-2026-58240: SAP NetWeaver Message Server does not sufficiently validate the authenticity of internal application server co…

SAP 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.

9.8 CVSS 3.1 Critical EPSS 0.53% · top 57.6% CWE-308 · CWE-308 Awaiting Analysis
9.8CVSS 3.1 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
9 Sep 2026Last modified by NVD

Description

SAP 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.

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

References

LinkTags
https://me.sap.com/notes/3759472
https://url.sap/sapsecuritypatchday

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Source: NIST National Vulnerability Database (record CVE-2026-58240), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.