Security readout for executives and security teams
Plain-English summary
A malicious DWF file can crash or take control of OpenText Brava! Desktop 16.6.3.84 when a user opens it or visits a malicious page. The main business risk is workstation compromise through document handling, not direct server exposure.
Executive priority
Treat this as a high-priority endpoint application risk where Brava is used for external document review. Urgency is highest for engineering, legal, or operations users who regularly open third-party DWF files.
Technical view
CVE-2021-31486 is a CWE-787 out-of-bounds write in Brava! Desktop DWF parsing. The flaw stems from missing validation of user-supplied data and may allow code execution in the current process. CVSS 3.0 is 7.8 high with user interaction required.
Likely exposure
Exposure is likely limited to environments running OpenText Brava! Desktop 16.6.3.84, especially users who receive or review DWF files from outside parties. The provided sources do not identify other affected versions or products.
Exploitation context
The sources describe exploitation through a malicious page or malicious file requiring user interaction. The CVE is not listed as KEV in the bundle, and no supplied source states active exploitation.
Researcher notes
The bundle supports one affected product and version, a DWF parser out-of-bounds write, and code execution in the current process. Patch details and broader version impact are not established in the supplied evidence.
Mitigation direction
- Inventory Brava! Desktop installations and identify version 16.6.3.84.
- Check OpenText and ZDI guidance for fixed builds or supported remediation.
- Limit opening DWF files from untrusted sources until remediation is confirmed.
- Use email and web controls to reduce delivery of suspicious DWF content.
- Prioritize remediation for privileged users and teams handling external CAD files.
Validation and detection
- Confirm whether Brava! Desktop 16.6.3.84 is installed on managed endpoints.
- Review file association and workflow use for DWF files.
- Verify whether vendor guidance names an updated or unaffected build.
- Check endpoint security telemetry for suspicious Brava child processes or crashes.
- Document compensating controls if immediate upgrade is not available.
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-787: 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-2021-31486 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
- 7.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.8HighVector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.zerodayinitiative.com/advisories/ZDI-21-626/CVE 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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.