CVE-2020-26941
5.5 · MEDIUMOverview
CVE-2020-26941 is a medium-severity vulnerability affecting eset endpoint_antivirus. It was published on January 26, 2021 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
A local (authenticated) low-privileged user can exploit a behavior in an ESET installer to achieve arbitrary file overwrite (deletion) of any file via a symlink, due to insecure permissions. The possibility of exploiting this vulnerability is limited and can only take place during the installation phase of ESET products. Furthermore, exploitation can only succeed when Self-Defense is disabled. Affected products are: ESET NOD32 Antivirus, ESET Internet Security, ESET Smart Security, ESET Smart Security Premium versions 13.2 and lower; ESET Endpoint Antivirus, ESET Endpoint Security, ESET NOD32 Antivirus Business Edition, ESET Smart Security Business Edition versions 7.3 and lower; ESET File Security for Microsoft Windows Server, ESET Mail Security for Microsoft Exchange Server, ESET Mail Security for IBM Domino, ESET Security for Kerio, ESET Security for Microsoft SharePoint Server versions 7.2 and lower.
Remediation
Check the references section for vendor advisories and patches from eset. Update endpoint_antivirus to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| eset | endpoint_antivirus | 0 | Affected |
| eset | endpoint_security | 0 | Affected |
| eset | file_security | 0 | Affected |
| eset | internet_security | 0 | Affected |
| eset | mail_security | 0 | Affected |
| eset | nod32_antivirus | 0 | Affected |
| eset | security | 0 | Affected |
| eset | smart_security | 0 | Affected |
Frequently Asked Questions
What is CVE-2020-26941?
CVE-2020-26941 is a medium-severity vulnerability affecting eset endpoint_antivirus. It was published on January 26, 2021 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2020-26941?
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2020-26941?
Check the references section for vendor advisories and patches from eset. Update endpoint_antivirus to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2020-26941?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-26941 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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