CVE-2021-37178

Arbitrary file disclosure via XML external entities

Published Aug 10, 2021 · Updated Aug 4, 2024

XML external entity injection in Siemens Solid Edge SE2021 before SE2021MP7 allows remote attackers to read arbitrary files via crafted XML. The underlying XML parser resolves attacker-controlled external entity references when it loads the document, exposing referenced local file content. Exploitation requires a user to open the crafted file in Solid Edge; the documented consequence is host-file disclosure.

CVSS severity5.5
Medium
EPSS probability0.92%
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 injection in Siemens Solid Edge SE2021 before SE2021MP7 allows remote attackers to read arbitrary files via crafted XML. The underlying XML parser resolves attacker-controlled external entity references when it loads the document, exposing referenced local file content. Exploitation requires a user to open the crafted file in Solid Edge; the documented consequence is host-file disclosure.

The record

CVE
CVE-2021-37178
Published
Aug 10, 2021
Updated
Aug 4, 2024
Vendor
Siemens
Product
Solid Edge
Classifications
CWE-611, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 10, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=All Versions < SE2021MP7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · Solid Edgeversion=All Versions < SE2021MP7

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:P/I:N/A:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1203Exploitation for Client Execution

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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