CVE-2020-26941
First published: Thu Jan 21 2021(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Eset Endpoint Antivirus | <=7.3 | |
| Eset Endpoint Security | <=7.3 | |
| Eset File Security | <=7.2 | |
| ESET Internet Security | <=13.2 | |
| ESET Internet Security | =1294 | |
| Eset Mail Security | <=7.2 | |
| Eset Mail Security | <=7.2 | |
| Eset Nod32 Antivirus | <=7.3 | |
| Eset Nod32 Antivirus | <=13.2 | |
| Eset Security | <=7.2 | |
| Eset Security | <=7.2 | |
| ESET Smart Security | <=7.3 | |
| ESET Smart Security | <=13.2 | |
| ESET Smart Security | <=13.2 |
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Reference Links
Frequently Asked Questions
What is CVE-2020-26941?
CVE-2020-26941 is a vulnerability that allows a local (authenticated) low-privileged user to achieve arbitrary file overwrite or deletion of any file via a symlink due to insecure permissions in ESET installers.
What is the severity of CVE-2020-26941?
CVE-2020-26941 has a severity rating of 5.5 (medium).
Which ESET products are affected by CVE-2020-26941?
Eset Endpoint Antivirus (up to version 7.3), Eset Endpoint Security (up to version 7.3), Eset File Security (up to version 7.2), ESET Internet Security (up to version 13.2), Eset Mail Security (up to version 7.2), Eset Nod32 Antivirus (up to version 7.3), Eset Security (up to version 7.2), ESET Smart Security (up to version 7.3), and ESET Smart Security Premium (up to version 13.2) are affected by CVE-2020-26941.
How can I fix CVE-2020-26941?
To fix CVE-2020-26941, it is recommended to update to the latest version of the affected ESET products.
Where can I find more information about CVE-2020-26941?
You can find more information about CVE-2020-26941 in the ESET support article at the following link: https://support.eset.com/en/ca7794-local-privilege-escalation-vulnerability-fixed-in-eset-products-for-windows
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