CVE-2020-28387

File disclosure via unrestricted external XML entity

Published Mar 15, 2021 · Updated Aug 4, 2024

XML external entity injection in Siemens Solid Edge SE2020 before SE2020MP13 and SE2021 before SE2021MP3 allows remote attackers to read files. The SEECTCXML parser accepts a crafted external DTD URI, retrieves the referenced resource, and embeds its contents into the parsed XML document. Exploitation requires a user to open a malicious file or visit a malicious page, and disclosure is limited to data readable by the application process.

CVSS severity5.5
Medium
EPSS probability0.89%
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 SE2020 before SE2020MP13 and SE2021 before SE2021MP3 allows remote attackers to read files. The SEECTCXML parser accepts a crafted external DTD URI, retrieves the referenced resource, and embeds its contents into the parsed XML document. Exploitation requires a user to open a malicious file or visit a malicious page, and disclosure is limited to data readable by the application process.

The record

CVE
CVE-2020-28387
Published
Mar 15, 2021
Updated
Aug 4, 2024
Vendor
Siemens
Product
Solid Edge
Classifications
CWE-611, T1005, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 15, 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 < SE2020MP13
  2. Affected versionversion=All Versions < SE2021MP3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · Solid Edgeversion=All Versions < SE2020MP13; version=All Versions < SE2021MP3

Published CVSS scores

5.5Trend Micro Zero Day InitiativeCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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
T1005Data from Local System
T1204.002Malicious File

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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