Critical Remote Code Execution in SAP NetWeaver (CVE‑2010‑5326) Bypasses Authentication
What It Is – The SAP NetWeaver Application Server Java Invoker servlet accepts HTTP/HTTPS requests without requiring any authentication. An attacker can supply a crafted request that triggers arbitrary code execution on the underlying host.
Exploitability – Public proof‑of‑concept code exists; the vulnerability is remotely exploitable over the network. CVSS v3.1 base score 9.8 (Critical).
Affected Products – SAP NetWeaver Application Server Java (all versions prior to the vendor‑issued patch released in 2010).
Why It Matters for Trust & Control Assurance
- Authentication controls: The flaw demonstrates a missing enforcement point, directly testing the “ensure only authorized identities can access services” control objective.
- Audit evidence: Organizations must be able to prove that authentication mechanisms are consistently enforced and logged, a requirement increasingly demanded by auditors and enterprise buyers.
- Continuous monitoring: Detecting unauthenticated servlet calls requires runtime monitoring and alerting—key components of a defensible control‑assurance posture.
Recommended Actions
- Apply SAP’s security patch for CVE‑2010‑5326 immediately on all NetWeaver AS‑Java instances.
- Verify that the Invoker servlet is disabled or restricted to trusted IP ranges via web‑container configuration.
- Enable detailed request logging for the servlet and integrate logs into a SIEM for real‑time anomaly detection.
- Conduct a control‑mapping exercise to confirm that authentication enforcement is documented, monitored, and evidentially reported against your framework of record (e.g., NIST CSF 2.0).
Source: CISA KEV – CVE‑2010‑5326