Security readout for executives and security teams
Plain-English summary
CVE-2020-23889 is a denial-of-service issue reported in WildBit Viewer v6.6. A specially crafted ICO image can crash the application. The sources do not show code execution, privilege escalation, public exploitation, a CVSS score, or a named vendor fix.
Executive priority
Handle through normal vulnerability hygiene unless WildBit Viewer is broadly deployed or used with external image submissions. The known impact is application crash, but source evidence is sparse and no active exploitation is cited.
Technical view
The report describes a user-mode write access violation in WildBit Viewer v6.6 at Editor!TMethodImplementationIntercept+0x4189c6 when processing a crafted ICO file. Public metadata classifies the impact as denial of service. Affected product data, CWE, CVSS, and remediation details are incomplete in the provided sources.
Likely exposure
Exposure is likely limited to workstations or workflows using WildBit Viewer v6.6 to open ICO files, especially files received from untrusted sources. The provided affected-product metadata is incomplete, so inventory validation is required.
Exploitation context
The source bundle indicates a crafted ICO file can trigger a crash. It does not cite CISA KEV listing, active exploitation, widespread targeting, or weaponized public exploitation. Treat this as a file-parsing crash risk unless stronger evidence emerges.
Researcher notes
Key gaps are missing CVSS, CWE, CPE, affected-version structure, and vendor remediation. The GitHub reference appears to be the public technical report, while CVE metadata confirms the denial-of-service description and dates.
Mitigation direction
- Inventory systems for WildBit Viewer v6.6 installations.
- Check WildBit vendor guidance for updates or replacement recommendations.
- Restrict opening ICO files from untrusted sources in WildBit Viewer.
- Use alternate maintained image viewers where operationally feasible.
- Apply endpoint controls for untrusted attachment handling.
Validation and detection
- Confirm whether WildBit Viewer v6.6 is installed on managed endpoints.
- Review file associations for ICO files on affected workstations.
- Check endpoint logs for WildBit Viewer crashes after ICO handling.
- Track vendor and CVE records for added CVSS, CWE, or fix details.
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-2020-23889 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://www.wildbit-soft.fi/software.htmlCVE reference · x_refsource_MISC
- https://github.com/Aurorainfinity/vulnerabilities/blob/master/WildBit_Viewer/ico_file_format.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.