CVE-2021-21475Network attack vector

Unauthenticated file disclosure via unchecked traversal sequences

Published Feb 9, 2021 · Updated Aug 3, 2024

Path traversal in SAP NetWeaver Master Data Management Server 710 and 710.750 allows remote attackers to read arbitrary server files. Path validation passes parent-directory traversal sequences from user-supplied path data to file APIs instead of rejecting or constraining them. No authentication or user interaction is required, but SAP states that exploitation occurs only under specific, undisclosed circumstances; exposure is limited to file confidentiality.

CVSS severity6.8
Medium
EPSS probability1.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in SAP NetWeaver Master Data Management Server 710 and 710.750 allows remote attackers to read arbitrary server files. Path validation passes parent-directory traversal sequences from user-supplied path data to file APIs instead of rejecting or constraining them. No authentication or user interaction is required, but SAP states that exploitation occurs only under specific, undisclosed circumstances; exposure is limited to file confidentiality.

The record

CVE
CVE-2021-21475
Published
Feb 9, 2021
Updated
Aug 3, 2024
Vendor
SAP SE
Product
SAP NetWeaver Master Data Management Server
Classifications
CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 710
  2. Affected versionversion=< 710.750

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SAP SE · SAP NetWeaver Master Data Management Serverversion=< 710; version=< 710.750

Published CVSS scores

6.8SAP SECVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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