Security readout for executives and security teams
Plain-English summary
This CVE describes a crash condition in Nitro Free PDF Reader 12.0.0.112. A specially crafted document or Unicode content can trigger a NULL pointer dereference in npdf.dll. The sources do not show data theft, code execution, active exploitation, or a named vendor fix.
Executive priority
Treat this as a hygiene and exposure-reduction issue unless vendor guidance or threat intelligence shows broader impact. Prioritize removal or upgrade where the affected reader handles external documents.
Technical view
The reported flaw is in the JBIG2Globals library inside npdf.dll, reaching CAPPDAnnotHandlerUtils::PDAnnotHandlerDestroyData2+0x90ec. The failure mode is a NULL pointer dereference caused by crafted Unicode content. Available sources identify Nitro Free PDF Reader 12.0.0.112, but provide no CVSS, CWE, patch level, or confirmed exploit activity.
Likely exposure
Exposure appears limited to environments where Nitro Free PDF Reader 12.0.0.112 is installed and used to process untrusted PDF or crafted Unicode content. The provided CVE data does not identify other Nitro products or versions.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. The public description indicates crafted content can trigger the flaw, suggesting user-assisted document handling risk rather than confirmed automated exploitation.
Researcher notes
Evidence is sparse. The CVE record names a NULL pointer dereference and affected version, but does not provide CVSS, CWE, exploit status, reproducible test details, or remediation. Avoid expanding scope beyond Nitro Free PDF Reader 12.0.0.112 without vendor confirmation.
Mitigation direction
- Inventory endpoints for Nitro Free PDF Reader 12.0.0.112.
- Check Nitro or vendor guidance for fixed or unaffected versions.
- Avoid opening untrusted PDF content with the affected reader.
- Use email and web controls to reduce delivery of suspicious PDF files.
- Consider replacing unsupported or obsolete PDF reader versions.
Validation and detection
- Confirm installed Nitro Free PDF Reader versions across managed endpoints.
- Check whether npdf.dll is present on systems running version 12.0.0.112.
- Review crash telemetry for Nitro Reader handling suspicious PDFs.
- Verify PDF file associations do not route untrusted files to affected software.
- Document any compensating controls for PDF handling workflows.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2019-19819 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://nafiez.github.io/security/vulnerability/remote/2019/12/12/multiple-nitro-pdf-vulnerability.htmlCVE reference · x_refsource_MISC
- https://github.com/nafiez/nafiez.github.io/blob/master/_posts/2019-12-12-multiple-nitro-pdf-vulnerability.mdCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.