CVE intelligence and bounded remediation

CVE-2020-6309 — Sap Netweaver Application Server Java security vulnerability

High CVSS 7.8

SAP NetWeaver AS JAVA, versions - (ENGINEAPI 7.10; WSRM 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50; J2EE-FRMW 7.10, 7.11), does not perform any authentication checks for a web service allowing the attacker to send several payloads and leading to complete denial of service.

Severity
High
CVSS
7.8 (2.0)
Published
2020-08-12
CISA KEV
Not currently listed
Ecosystem
java/maven
Weaknesses
CWE-306

Affected products

  • sap / netweaver_application_server_java / 7.10
  • sap / netweaver_application_server_java / 7.11
  • sap / netweaver_application_server_java / 7.20
  • sap / netweaver_application_server_java / 7.30
  • sap / netweaver_application_server_java / 7.31
  • sap / netweaver_application_server_java / 7.40

Showing 6 representative product identities from 7 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

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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