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CRITICAL

CVE-2026-58240

CVSS v3

9.8

CRITICAL

EPSS Score

0.5 %

exploit probability, as of 2026-09-28

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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.

Technical details

Published
2026-09-08
Last Modified
2026-09-09

Frequently asked questions

What is CVE-2026-58240?

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.

Is CVE-2026-58240 actively exploited?

Active exploitation of CVE-2026-58240 has not been confirmed. Its EPSS score was 0.5% on 2026-09-28, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-58240?

CVE-2026-58240 has a CVSS v3 base score of 9.8 (CRITICAL severity).

Is CVE-2026-58240 affecting your environment?

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