CVE-2021-27598Network attack vector

Unauthenticated statistical data disclosure via CUP servlet

Published Apr 13, 2021 · Updated Aug 3, 2024

Missing authorization in Customer Usage Provisioning Servlet in SAP NetWeaver AS for Java 7.31, 7.40, and 7.50 allows remote attackers to read statistical data. The servlet omits an authorization check, returning product version, traffic and timestamp statistics to unauthenticated network requests. The impact is limited to information disclosure; the record reports no ability to modify data or interrupt service.

CVSS severity5.3
Medium
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Customer Usage Provisioning Servlet in SAP NetWeaver AS for Java 7.31, 7.40, and 7.50 allows remote attackers to read statistical data. The servlet omits an authorization check, returning product version, traffic and timestamp statistics to unauthenticated network requests. The impact is limited to information disclosure; the record reports no ability to modify data or interrupt service.

The record

CVE
CVE-2021-27598
Published
Apr 13, 2021
Updated
Aug 3, 2024
Vendor
SAP SE
Product
SAP NetWeaver AS for Java
Classifications
CWE-862, CWE-284
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 13, 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=< 7.31
  2. Affected versionversion=< 7.40
  3. Affected versionversion=< 7.50

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SAP SE · SAP NetWeaver AS for Javaversion=< 7.31; version=< 7.40; version=< 7.50

Published CVSS scores

6.5SAP SECVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
5.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.0NVDAV:N/AC:L/Au:N/C:P/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-862Missing Authorization
CWE-284Improper Access Control

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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