Malicious File Upload to SAP NetWeaver Metadata Uploader Endpoint

PremiumReviewedSigma · High · v1
Category
webserver
Author
HuntRule
Published
2026-06-25
Updated
2026-08-28

ATT&CK techniques

Initial Access
  1. Recon

  2. Resource Dev

  3. Execution

  4. Persistence

  5. Priv Esc

  6. Defense Evasion

  7. Cred Access

  8. Discovery

  9. Lateral Movement

  10. Collection

  11. C2

  12. Exfiltration

  13. Impact

What it detects

This rule detects HTTP POST requests to the SAP NetWeaver Visual Composer metadatauploader endpoint exploited in CVE-2025-31324. Threat actors abuse this unauthenticated upload flaw to drop JSP web shells and achieve remote code execution on internet-facing SAP servers. Detecting these uploads catches initial access before web shell deployment.

Related detections9 linkedT1190 — drag to rearrange
Possible React2Shell CVE-2025-55182 Prototype Pollution Exploitation
Possible Next.js Middleware Auth Bypass via X-Middleware-Subrequest Header (CVE-2025-29927)
Possible Ivanti Pulse Connect Secure Command Injection via License Keys-Status Endpoint (via webserver)
Possible Ivanti Pulse Connect Secure Auth Bypass via TOTP Backup Code Path Traversal (via webserver)
Possible Citrix Bleed Session Token Leak via OpenID Configuration Endpoint (CVE-2023-4966) (via webserver)
Suspicious Citrix StoreFront SAML Test Endpoint Access for XSS (CVE-2023-5914) (via webserver)
Possible Citrix ShareFile Unauthenticated Upload Path Traversal Webshell (CVE-2023-24489) (via webserver)
Possible Citrix NetScaler Gateway Buffer Overflow via formssso Endpoint (CVE-2023-3519) (via webserver)
Possible Progress WS_FTP Ad Hoc Deserialization via AHT_DEFAULT_UPLOAD_PARAMETER Marker
Malicious File Upload to SAP NetWeaver Metadata Uploader Endpoint
Pivot detection · T1190 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.