Security readout for executives and security teams
Plain-English summary
CVE-2020-23899 is a crash vulnerability in WildBit Viewer v6.6. A specially crafted TGA image can trigger a user-mode write access violation and cause denial of service. The sources do not show code execution, data theft, active exploitation, or an official severity score.
Executive priority
Treat this as a targeted workstation stability risk, not a confirmed breach vector. Prioritize if WildBit Viewer v6.6 is deployed in workflows that process external image files.
Technical view
The reported flaw is a user-mode write access violation at Editor+0x5f91 in WildBit Viewer v6.6 when processing a crafted TGA file. The documented impact is denial of service. The record lacks CVSS, CWE mapping, normalized affected product metadata, and vendor remediation details.
Likely exposure
Exposure appears limited to systems where WildBit Viewer v6.6 is installed and users can open untrusted TGA files. The source bundle does not identify other affected versions or platforms.
Exploitation context
The CVE and referenced research describe a crafted TGA file causing a crash. CISA KEV status is false, and the provided sources do not claim active exploitation in the wild.
Researcher notes
Evidence is sparse: the CVE record names WildBit Viewer v6.6, the crash location, and TGA parsing as the trigger. No CVSS, CWE, patch reference, exploit-in-the-wild claim, or affected-version range is provided.
Mitigation direction
- Check WildBit vendor guidance for updated builds or remediation notes.
- Avoid opening untrusted TGA files in WildBit Viewer v6.6.
- Use alternate viewers for untrusted image samples until vendor status is confirmed.
- Restrict email and web delivery of uncommon image attachments where practical.
Validation and detection
- Inventory endpoints for WildBit Viewer v6.6 installations.
- Confirm whether users handle TGA files from external or untrusted sources.
- Review vendor release notes for fixes affecting TGA parsing.
- Monitor endpoint crash reports involving WildBit Viewer and TGA files.
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-2020-23899 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://www.wildbit-soft.fi/software.htmlCVE reference · x_refsource_MISC
- https://github.com/Aurorainfinity/vulnerabilities/blob/master/WildBit_Viewer/tga_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.