Security readout for executives and security teams
Plain-English summary
FastStone Image Viewer 6.5 was reported to crash or fault when processing a specially crafted image file. The available sources describe a read access violation, not confirmed code execution. Business risk depends on whether this legacy viewer is installed and used to open untrusted images.
Executive priority
Treat as targeted hygiene unless FastStone Image Viewer 6.5 is broadly deployed or used with untrusted images. Prioritize discovery and removal or upgrade, because the official data lacks severity and fix details.
Technical view
CVE-2018-15817 describes a read access violation during a block data move in FastStone Image Viewer 6.5, triggered by a crafted image file. The source bundle provides no CVSS score, CWE, affected CPEs, patch statement, or vendor mitigation.
Likely exposure
Exposure is most likely on endpoints where FastStone Image Viewer 6.5 is installed and users open images from email, web downloads, shared folders, or external media. The bundle does not identify other affected versions or products.
Exploitation context
The CVE requires a crafted image file to be parsed by the vulnerable viewer. The source bundle marks KEV as false and provides no cited evidence of active exploitation, public weaponization, or exploitation beyond crash evidence.
Researcher notes
Evidence is sparse: the CVE text and referenced crash report identify a crafted-image read access violation. No CVSS, CWE, exploit maturity, patch status, or broader version range is supplied, so avoid expanding impact beyond crash/fault behavior.
Mitigation direction
- Inventory endpoints for FastStone Image Viewer 6.5.
- Check FastStone vendor guidance for fixed versions or advisories.
- Upgrade, replace, or remove unsupported vulnerable installations.
- Limit opening untrusted images in affected software.
- Use endpoint controls to reduce risky file associations.
Validation and detection
- Confirm installed FastStone Image Viewer versions across managed endpoints.
- Review default image file associations on affected systems.
- Check EDR or crash telemetry for FastStone access violations.
- Test remediation by verifying the vulnerable version is absent.
- Document any vendor guidance found during remediation.
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-2018-15817 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://0x00crashes.blogspot.com/2018/08/faststone-image-viewer-65-few-crashes.htmlCVE 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.