Security readout for executives and security teams
Plain-English summary
Graphisoft BIMx Desktop Viewer 2019.2.2328 can be compromised when a user opens a maliciously crafted file. The flaw can corrupt memory and may let an attacker run code with the user’s privileges. Business risk is highest where old BIMx viewers are used in design, architecture, or model-review workflows that receive external files.
Executive priority
Treat this as high priority if the affected viewer is present in active file-review workflows. It is not internet-self-exploiting, but malicious file handling can turn normal business collaboration into code execution exposure.
Technical view
CVE-2020-6099 is a heap buffer overflow in BIMx Desktop Viewer file format parsing, associated with CWE-680. The CVSS 3.0 score is 8.8 with network attack vector, no privileges required, and user interaction required. The source bundle identifies Graphisoft BIMx Desktop Viewer 2019.2.2328 as affected.
Likely exposure
Exposure is likely limited to endpoints running Graphisoft BIMx Desktop Viewer 2019.2.2328, especially where users open files from clients, partners, or public sources.
Exploitation context
The sources do not show CISA KEV listing or confirmed active exploitation. Exploitation requires delivering a specially crafted file and persuading a user to open it in the affected viewer. The sources do not provide exploit-in-the-wild evidence or a specific fixed release.
Researcher notes
Key evidence is limited to CVE metadata and the Talos advisory reference. Do not assume broader Graphisoft product impact beyond BIMx Desktop Viewer 2019.2.2328. Patch details are not included in the provided bundle, so remediation should be tied to vendor guidance.
Mitigation direction
- Inventory endpoints for BIMx Desktop Viewer 2019.2.2328.
- Check Graphisoft and Talos guidance for updated or remediated versions.
- Remove or isolate the affected viewer where it is not required.
- Restrict opening BIMx viewer files from untrusted external sources.
- Use endpoint controls to detect abnormal viewer crashes or child processes.
Validation and detection
- Confirm installed BIMx Desktop Viewer versions across managed endpoints.
- Identify users or teams receiving external model-review files.
- Review software inventory for unsupported or legacy Graphisoft viewer installations.
- Check security telemetry for unusual BIMx Desktop Viewer crashes or process behavior.
- Document compensating controls if immediate removal is not possible.
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.
CWE-680: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-6099 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
- High
- CVSS
- 8.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1032CVE 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.
Integer Overflow to Buffer Overflow
Integer Overflow to Buffer Overflow represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.