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CVE Record

CVE-2018-1000542: netbeans-mmd-plugin version <= 1.4.3 contains a XML External Entity (XXE) vulnerability in MMD file import...

netbeans-mmd-plugin version <= 1.4.3 contains a XML External Entity (XXE) vulnerability in MMD file import that can result in Possible information disclosure, server-side request forgery, or remote code execution. This attack appear to be exploitable via Specially crafted MMD file.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2018-1000542 affects netbeans-mmd-plugin version 1.4.3 and earlier. A specially crafted MMD file imported into the plugin can trigger unsafe XML external entity handling, with possible information disclosure, server-side request forgery, or remote code execution. Public data does not provide a CVSS score or confirmed exploitation.

Executive priority

Handle during normal vulnerability remediation unless the plugin is widely deployed or used with external files. Escalate if sensitive developer machines process untrusted MMD files.

Technical view

The vulnerability is an XXE flaw in the MMD file import path of netbeans-mmd-plugin <= 1.4.3. The published description says exploitation requires a crafted MMD file and may affect confidentiality, cause SSRF, or potentially enable code execution. The source bundle does not provide CWE, CPE, CVSS, patch version, or exploit-in-the-wild evidence.

Likely exposure

Exposure is likely limited to developer workstations or environments using NetBeans with netbeans-mmd-plugin <= 1.4.3, especially where users import MMD files from untrusted sources.

Exploitation context

The CVE states exploitation is via a specially crafted MMD file. CISA KEV is false, and the supplied sources do not show active exploitation. Treat this as a targeted file-handling risk rather than a broadly internet-exposed service issue.

Researcher notes

Automated exposure matching may be weak because the bundle lists no CPEs, CWE, or CVSS. The strongest facts are component, affected version range, import vector, and XXE class. Patch status is not established in the supplied data.

Mitigation direction

  • Inventory NetBeans installations for netbeans-mmd-plugin version 1.4.3 or earlier.
  • Disable or remove the plugin where it is not business-critical.
  • Avoid importing MMD files from untrusted or unsolicited sources.
  • Check the project issue and vendor guidance for fixed versions or safe configuration.
  • Restrict IDE network access where practical to reduce SSRF impact.

Validation and detection

  • Confirm whether any managed endpoints have netbeans-mmd-plugin installed.
  • Record installed plugin versions and flag version 1.4.3 or earlier.
  • Review recent MMD file imports from email, downloads, or external repositories.
  • Check endpoint telemetry for unusual NetBeans file or network access after imports.
  • Verify remediation by confirming the plugin is removed, disabled, or updated per guidance.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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description · low confidence lookup

Cloud metadata behavior lookup

The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2018-1000542 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.