by Kastro
Paper/Archive/CVE-2026-58240

CVE-2026-58240

SAP_SE SAP NetWeaver (Message Server) — Missing Authentication check in SAP NetWeaver (Message Server)

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
38
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 44.7.447 × 208.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
SAP NetWeaver (Message Server)KERNEL 9.16–CNA
SAP NetWeaver (Message Server)9.18–CNA
SAP NetWeaver (Message Server)9.19–CNA
SAP NetWeaver (Message Server)9.20–CNA

Scores by source

sap (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refme.sap.com/notes/3759472refurl.sap/sapsecuritypatchday