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CVE Record

CVE-2019-9847: Executable hyperlink targets executed unconditionally on activation

A vulnerability in LibreOffice hyperlink processing allows an attacker to construct documents containing hyperlinks pointing to the location of an executable on the target users file system. If the hyperlink is activated by the victim the executable target is unconditionally launched. Under Windows and macOS when processing a hyperlink target explicitly activated by the user there was no judgment made on whether the target was an executable file, so such executable targets were launched unconditionally. This issue affects: All LibreOffice Windows and macOS versions prior to 6.1.6; LibreOffice Windows and macOS versions in the 6.2 series prior to 6.2.3.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

LibreOffice on Windows and macOS could launch a local executable when a user clicked a crafted document hyperlink. The attack depends on user interaction and the executable path existing on the victim system. The source bundle does not report active exploitation.

Executive priority

Treat this as a medium-priority endpoint hygiene issue unless affected LibreOffice versions are common in document-heavy teams. Patch legacy installations and reduce exposure to untrusted documents.

Technical view

CVE-2019-9847 affects LibreOffice hyperlink handling on Windows and macOS before 6.1.6, and 6.2 before 6.2.3. Activated hyperlinks targeting executable files were launched without an executable-file judgment. No CVSS, CWE, or exploit evidence is provided in the bundle.

Likely exposure

Exposure is likely where Windows or macOS endpoints still run affected LibreOffice versions and users open untrusted documents. Linux exposure is not identified in the provided sources.

Exploitation context

The provided KEV flag is false, and no cited source reports exploitation. A plausible attack path is social engineering a user into activating a crafted hyperlink in a document; the bundle does not support broader claims.

Researcher notes

Evidence is limited to the CVE description and LibreOffice advisory reference. The key boundary is user-activated hyperlinks to local executable targets on Windows and macOS; do not assume remote code execution without user interaction from these sources.

Mitigation direction

  • Upgrade LibreOffice on Windows and macOS to 6.1.6, 6.2.3, or newer.
  • Prioritize updates on systems that open external or emailed documents.
  • Review vendor advisory details before applying compensating controls.
  • Train users not to activate unexpected document hyperlinks.

Validation and detection

  • Inventory LibreOffice versions on Windows and macOS endpoints.
  • Confirm no affected versions remain below 6.1.6 or 6.2.3.
  • Check document-handling workflows for untrusted external files.
  • Verify endpoint controls log or restrict unexpected local executable launches.
Prepared
Confidence
high
Sources
3

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.

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CVE-2019-9847 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
2Source 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
Document FoundationLibreOfficeunspecified, unspecifiedListed
Weakness

CWE details

No CWE listed

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