Security readout for executives and security teams
Plain-English summary
Canvas Draw 4.0.0 can be compromised if a user opens a malicious PCX image. Successful exploitation could let an attacker run code with the user’s privileges. Business risk is mainly to endpoints or creative workflows that still use this older application and handle externally supplied image files.
Executive priority
Prioritize remediation where Canvas Draw 4.0.0 is present and users handle outside image files. The risk is high-impact but narrower than a server-side flaw because exploitation requires a user to process a malicious file.
Technical view
The issue is a CWE-787 out-of-bounds write in Canvas Draw 4.0.0 PCX parsing. A crafted PCX processed by the application can overwrite data and may lead to code execution. CVSS 3.0 is 8.8 with user interaction required. Sources identify it as distinct from CVE-2018-3871.
Likely exposure
Exposure is likely limited to systems running ACD Systems Canvas Draw 4.0.0, especially where users open PCX files from email, downloads, shared drives, or third parties.
Exploitation context
The source bundle describes exploitable code execution via a crafted PCX image. It does not cite public active exploitation, and KEV status is false. Treat exploitation as plausible but user-assisted, not confirmed in the wild from the provided evidence.
Researcher notes
Focus on asset exposure and parser attack surface, not broad network scanning. The provided evidence names only Canvas Draw 4.0.0 and PCX parsing. Patch status is not included in the bundle, so remediation should be tied to vendor-confirmed guidance.
Mitigation direction
- Inventory endpoints for ACD Systems Canvas Draw 4.0.0.
- Check ACD Systems or Talos guidance for fixed versions or vendor workarounds.
- Avoid opening PCX files from untrusted or external sources.
- Restrict PCX file associations on systems that do not need them.
- Remove or replace Canvas Draw 4.0.0 where business use is not required.
Validation and detection
- Confirm whether Canvas Draw 4.0.0 is installed on managed endpoints.
- Identify users or workflows that receive or process PCX files.
- Review endpoint telemetry for unexpected Canvas Draw child processes or crashes.
- Check email and web controls for PCX attachment handling.
- Document whether a vendor-supported upgrade or workaround is 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-2018-3870 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-2018-0552CVE 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.