CVE-2021-37852 | LPE in ESET products for Windows

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.

Published: 2022-02-09 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-37852 is rated Moderate Risk (43.2/100): CVSS High severity, with low exploitation likelihood (EPSS 0.14%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-37852

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-07 0.04% 0.14% +0.10%
2 2025-04-01 0.14% 0.04% -0.10%
3 2025-03-30 — 0.14% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-37852

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]
7.2 2.0 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.9 10.0 [email protected]

Weakness enumeration for CVE-2021-37852

Affected software / configurations for CVE-2021-37852

Vendor Product Version Raw CPE
eset endpoint_antivirus >= 6.6.2046.0, < 7.3.2055.0 cpe:2.3:a:eset:endpoint_antivirus:*:*:*:*:*:windows:*:*
eset endpoint_antivirus >= 8.0, < 8.0.2028.3 cpe:2.3:a:eset:endpoint_antivirus:*:*:*:*:*:windows:*:*
eset endpoint_antivirus >= 8.1, < 8.1.2031.4 cpe:2.3:a:eset:endpoint_antivirus:*:*:*:*:*:windows:*:*
eset endpoint_antivirus >= 9.0, < 9.0.2032.6 cpe:2.3:a:eset:endpoint_antivirus:*:*:*:*:*:windows:*:*
eset endpoint_security >= 6.6.2046.0, < 7.3.2055.0 cpe:2.3:a:eset:endpoint_security:*:*:*:*:*:windows:*:*
eset endpoint_security >= 8.0, < 8.0.2028.3 cpe:2.3:a:eset:endpoint_security:*:*:*:*:*:windows:*:*
eset endpoint_security >= 8.1, < 8.1.2031.4 cpe:2.3:a:eset:endpoint_security:*:*:*:*:*:windows:*:*
eset endpoint_security >= 9.0, < 9.0.2032.6 cpe:2.3:a:eset:endpoint_security:*:*:*:*:*:windows:*:*
eset file_security >= 7.0.12014.0, <= 7.3.12006.0 cpe:2.3:a:eset:file_security:*:*:*:*:*:windows_server:*:*
eset internet_security >= 10.0.337.1, < 15.0.18.0 cpe:2.3:a:eset:internet_security:*:*:*:*:*:windows:*:*
eset mail_security >= 7.0.10019, < 7.3.10014.0 cpe:2.3:a:eset:mail_security:*:*:*:*:*:exchange_server:*:*
eset mail_security >= 7.0.14008.0, < 7.3.14003.0 cpe:2.3:a:eset:mail_security:*:*:*:*:*:domino:*:*
eset mail_security >= 8.0, < 8.0.14006.0 cpe:2.3:a:eset:mail_security:*:*:*:*:*:domino:*:*
eset mail_security >= 8.0.10012.0, < 8.0.10018.0 cpe:2.3:a:eset:mail_security:*:*:*:*:*:exchange_server:*:*
eset nod32_antivirus >= 10.0.337.1, <= 15.0.18.0 cpe:2.3:a:eset:nod32_antivirus:*:*:*:*:*:windows:*:*
eset security >= 7.0.15008.0, <= 8.0.15004.0 cpe:2.3:a:eset:security:*:*:*:*:*:sharepoint:*:*
eset server_security >= 7.0.12016.1002, <= 7.2.12004.1000 cpe:2.3:a:eset:server_security:*:*:*:*:azure:*:*:*
eset server_security 8.0.12003.0 cpe:2.3:a:eset:server_security:8.0.12003.0:*:*:*:*:windows_server:*:*
eset server_security 8.0.12003.1 cpe:2.3:a:eset:server_security:8.0.12003.1:*:*:*:*:windows_server:*:*
eset smart_security >= 10.0.337.1, <= 15.0.18.0 cpe:2.3:a:eset:smart_security:*:*:*:*:-:windows:*:*
eset smart_security >= 10.0.337.1, <= 15.0.18.0 cpe:2.3:a:eset:smart_security:*:*:*:*:premium:windows:*:*

References for CVE-2021-37852

cvelogic Threat Intelligence