CVE-2021-27604Network attack vector

Authenticated data disclosure via XML entity resolution

Published Apr 14, 2021 · Updated Aug 3, 2024

XML External Entity in SAP Process Integration ESR Java Mappings 7.10 through 7.50 allows remote authenticated users to disclose data via crafted XML. The Java mapping XML parser resolves attacker-supplied external entities instead of blocking them, permitting references to local files or other reachable resources. An authenticated user able to submit or trigger a mapping document is required; the documented impact is information disclosure rather than configuration change or service interruption.

CVSS severity6.5
Medium
EPSS probability0.79%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XML External Entity in SAP Process Integration ESR Java Mappings 7.10 through 7.50 allows remote authenticated users to disclose data via crafted XML. The Java mapping XML parser resolves attacker-supplied external entities instead of blocking them, permitting references to local files or other reachable resources. An authenticated user able to submit or trigger a mapping document is required; the documented impact is information disclosure rather than configuration change or service interruption.

The record

CVE
CVE-2021-27604
Published
Apr 14, 2021
Updated
Aug 3, 2024
Vendor
SAP SE
Product
SAP Process Integration (Enterprise Service Repository Java Mappings)
Classifications
CWE-611, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 14, 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=< 7.10
  2. Affected versionversion=< 7.20
  3. Affected versionversion=< 7.30
  4. Affected versionversion=< 7.31
  5. Affected versionversion=< 7.40
  6. Affected versionversion=< 7.50

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SAP SE · SAP Process Integration (Enterprise Service Repository Java Mappings)version=< 7.10; version=< 7.20; version=< 7.30; version=< 7.31; version=< 7.40; version=< 7.50

Published CVSS scores

7.7[email protected]CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
4.0[email protected]AV:N/AC:L/Au:S/C:P/I:N/A:N
6.5[email protected]CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1190Exploit Public-Facing Application

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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