CVE-2026-58240CWE-308

CVE-2026-58240

Critical · published September 8, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
43.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00528 · 43.9th percentile
Weakness
CWE-308 · Use of Single-factor Authentication
Published
2026-09-08T05:17Z
References (2)
EPSS history
Timeline
  • 09 SEP 03:19Z
    EPSS moved — → 0%
    epss
  • 08 SEP 00:10Z
    Missing Authentication check in SAP NetWeaver (Message Server)
    cvelistv5