CVE intelligence and bounded remediation

CVE-2023-30744 — Sap Netweaver Application Server For Java security vulnerability

Critical CVSS 9.1

In SAP AS NetWeaver JAVA - versions SERVERCORE 7.50, J2EE-FRMW 7.50, CORE-TOOLS 7.50, an unauthenticated attacker can attach to an open interface and make use of an open naming and directory API to instantiate an object which has methods which can be called without further authorization and authentication. A subsequent call to one of these methods can read or change the state of existing services without any effect on availability.

Severity
Critical
CVSS
9.1 (3.1)
Published
2023-05-09
CISA KEV
Not currently listed
Ecosystem
java/maven
Weaknesses
CWE-306

Affected products

  • sap / netweaver_application_server_for_java / 7.50

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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