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Fencer Vulns
high 7.8

CVE-2021-37852 json

LPE in ESET products for Windows

published 2022-02-09 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-24331

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits
0
none known

Summary

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.

Patch / fix

  • eset endpoint_antivirus 7.3.2055.0, 8.0.2028.3, 8.1.2031.4, 9.0.2032.6
  • eset endpoint_security 7.3.2055.0, 8.0.2028.3, 8.1.2031.4, 9.0.2032.6
  • eset internet_security 15.0.18.0
  • eset mail_security 7.3.10014.0, 7.3.14003.0, 8.0.10018.0, 8.0.14006.0

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • ESET ESET NOD32 Antivirus
  • ESET ESET Internet Security
  • ESET ESET Smart Security
  • ESET ESET Endpoint Antivirus for Windows
  • ESET ESET Endpoint Security for Windows
  • ESET ESET Server Security for Microsoft Windows Server
  • ESET ESET File Security for Microsoft Windows Server
  • ESET ESET Server Security for Microsoft Azure
  • ESET ESET Security for Microsoft SharePoint Server
  • ESET ESET Mail Security for IBM Domino
  • ESET ESET Mail Security for Microsoft Exchange Server

Classification

Weakness
  • CWE-269 Improper Privilege Management

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.