Improper authentication in SAP NetWeaver - CVE-2026-58240
Published: September 8, 2026
Vulnerability identifier: #VU147377
CSH Severity: Critical
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-58240
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error when processing authentication requests in Message server. A remote attacker can bypass authentication process and gain unauthorized access to the system.
Affected software
SAP NetWeaver
How to mitigate CVE-2026-58240
Install updates from vendor's website.