How severe is CVE-2021-37852?

CVE-2021-37852 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-37852 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37852?

CVE-2021-37852 primarily affects Eset Endpoint Antivirus. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-37852?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-37852 published?

CVE-2021-37852 was published on 2022-02-09 and last updated on 2026-06-17.

CVE-2021-37852

CVE-2021-37852 is a high-severity vulnerability in Eset Endpoint Antivirus with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-269.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Eset Endpoint Antivirus
Published: 2022-02-09
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-37852?: 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.
How severe is CVE-2021-37852?: CVE-2021-37852 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-37852 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37852?: CVE-2021-37852 primarily affects Eset Endpoint Antivirus. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-37852?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-37852 published?: CVE-2021-37852 was published on 2022-02-09 and last updated on 2026-06-17.

References

Affected products (13)

cpe:2.3:a:eset:endpoint_antivirus:*:*:*:*:*:windows:*:*
cpe:2.3:a:eset:endpoint_security:*:*:*:*:*:windows:*:*
cpe:2.3:a:eset:file_security:*:*:*:*:*:windows_server:*:*
cpe:2.3:a:eset:internet_security:*:*:*:*:*:windows:*:*
cpe:2.3:a:eset:mail_security:*:*:*:*:*:exchange_server:*:*
cpe:2.3:a:eset:mail_security:*:*:*:*:*:domino:*:*
cpe:2.3:a:eset:nod32_antivirus:*:*:*:*:*:windows:*:*
cpe:2.3:a:eset:security:*:*:*:*:*:sharepoint:*:*
cpe:2.3:a:eset:server_security:*:*:*:*:azure:*:*:*
cpe:2.3:a:eset:server_security:8.0.12003.0:*:*:*:*:windows_server:*:*
cpe:2.3:a:eset:server_security:8.0.12003.1:*:*:*:*:windows_server:*:*
cpe:2.3:a:eset:smart_security:*:*:*:*:-:windows:*:*
cpe:2.3:a:eset:smart_security:*:*:*:*:premium:windows:*:*

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