Endpoint and server security
CVE-2021-37851: Local Privilege Escalation in ESET product for Windows
Local privilege escalation in Windows products of ESET allows user who is logged into the system to exploit repair feature of the installer to run malicious code with higher privileges.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| ESET NOD32 Antivirus 11.2 | 15.1.12.0 or later |
| ESET Internet Security 11.2 | 15.1.12.0 or later |
| ESET Smart Security Premium 11.2 | 15.1.12.0 or later |
| ESET Endpoint Antivirus 6.0 | 8.0.2053.0, 8.1.2050.0 or later |
| ESET Endpoint Security 6.0 | 8.0.2053.0, 8.1.2050.0 or later |
| ESET Server Security for Microsoft Windows Server 8.0 | 9.0.12012.0 or later |
| ESET File Security for Microsoft Windows Server 6.0 8 | See the advisory |
| ESET Mail Security for Microsoft Exchange Server 6.0 | 8.0.10020.0 or later |
| ESET Mail Security for IBM Domino 6.0 | 8.0.14011.0 or later |
| ESET Security for Microsoft SharePoint Server 6.0 | 8.0.15009.0 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
Local privilege escalation in Windows products of ESET allows user who is logged into the system to exploit repair feature of the installer to run malicious code with higher privileges. This issue affects: ESET, spol. s r.o. ESET NOD32 Antivirus 11.2 versions prior to 15.1.12.0. ESET, spol. s r.o. ESET Internet Security 11.2 versions prior to 15.1.12.0. ESET, spol. s r.o. ESET Smart Security Premium 11.2 versions prior to 15.1.12.0. ESET, spol. s r.o. ESET Endpoint Antivirus 6.0 versions prior to 9.0.2046.0; 6.0 versions prior to 8.1.2050.0; 6.0 versions prior to 8.0.2053.0. ESET, spol. s r.o. ESET Endpoint Security 6.0 versions prior to 9.0.2046.0; 6.0 versions prior to 8.1.2050.0; 6.0 versions prior to 8.0.2053.0. ESET, spol. s r.o. ESET Server Security for Microsoft Windows Server 8.0 versions prior to 9.0.12012.0. ESET, spol. s r.o. ESET File Security for Microsoft Windows Server 8.0.12013.0. ESET, spol. s r.o. ESET Mail Security for Microsoft Exchange Server 6.0 versions prior to 8.0.10020.0. ESET, spol. s r.o. ESET Mail Security for IBM Domino 6.0 versions prior to 8.0.14011.0. ESET, spol. s r.o. ESET Security for Microsoft SharePoint Server 6.0 versions prior to 8.0.15009.0.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.