CVE intelligence and bounded remediation

CVE-2023-27269 — Sap Netweaver Application Server Abap security vulnerability

Critical CVSS 9.6

SAP NetWeaver Application Server for ABAP and ABAP Platform - versions 700, 701, 702, 731, 740, 750, 751, 752, 753, 754, 755, 756, 757, 791, allows an attacker with non-administrative authorizations to exploit a directory traversal flaw in an available service to overwrite the system files. In this attack, no data can be read but potentially critical OS files can be overwritten making the system unavailable.

Severity
Critical
CVSS
9.6 (3.1)
Published
2023-03-14
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-22

Affected products

  • sap / netweaver_application_server_abap / 700
  • sap / netweaver_application_server_abap / 701
  • sap / netweaver_application_server_abap / 702
  • sap / netweaver_application_server_abap / 731
  • sap / netweaver_application_server_abap / 740
  • sap / netweaver_application_server_abap / 750

Showing 6 representative product identities from 14 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Path traversal, unsafe upload, and file handling

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Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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