Security readout for executives and security teams
Plain-English summary
CVE-2017-14543 is a file-handling flaw in STDU Viewer 1.6.375. Opening a specially crafted EPUB file may crash the application and may have other unspecified impact. The public record does not provide CVSS severity, a confirmed patch, or evidence of active exploitation.
Executive priority
Prioritize if STDU Viewer is still present in business workflows or on shared workstations. The known impact is application crash, but the record leaves other impact unspecified, so unmanaged legacy installs should be reduced rather than accepted silently.
Technical view
The CVE describes crafted .epub input influencing branch selection in STDUEPubFile, with faulting address data controlling execution flow near DllUnregisterServer. Reported impact is denial of service or possibly unspecified other impact. No CWE, CVSS vector, fixed version, or exploitation confirmation is provided in the source bundle.
Likely exposure
Exposure is limited to environments where STDU Viewer 1.6.375 is installed and users open EPUB files from untrusted or external sources. The source bundle does not identify broader product families, server exposure, or affected versions beyond 1.6.375.
Exploitation context
The described attack requires a crafted EPUB file to be opened by the vulnerable viewer. The CVE is not listed as KEV in the provided bundle, and the cited sources do not state active exploitation in the wild.
Researcher notes
Evidence is sparse. The CVE record and advisory identify a crafted EPUB parsing issue in STDU Viewer 1.6.375, but provide no CVSS, CWE, patch status, exploit maturity, or clear memory-corruption classification beyond the branch-selection note.
Mitigation direction
- Identify endpoints running STDU Viewer 1.6.375.
- Avoid opening untrusted EPUB files in STDU Viewer.
- Check vendor or advisory sources for any fixed release or replacement guidance.
- Consider removing or replacing unsupported STDU Viewer installations.
- Use endpoint controls to restrict risky document viewers where feasible.
Validation and detection
- Inventory installed STDU Viewer versions on managed endpoints.
- Confirm whether EPUB files are associated with STDU Viewer.
- Review crash telemetry for STDU Viewer when handling EPUB files.
- Check user groups that receive external EPUB attachments or downloads.
- Verify compensating controls block untrusted file handling where needed.
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
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CVE-2017-14543 mapping review
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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://github.com/wlinzi/security_advisories/tree/master/CVE-2017-14543CVE 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.