5.5
MEDIUM
CVE-2020-26941
ESET Installer Symlink File Overwrite Vulnerability
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.

INFO

Published Date :

Jan. 26, 2021, 6:15 p.m.

Last Modified :

Nov. 21, 2024, 5:20 a.m.

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2020-26941 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Eset nod32_antivirus
2 Eset smart_security
3 Eset internet_security
4 Eset endpoint_antivirus
5 Eset endpoint_security
6 Eset file_security
7 Eset mail_security
8 Eset security
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-26941.

URL Resource
https://support.eset.com/en/ca7794-local-privilege-escalation-vulnerability-fixed-in-eset-products-for-windows Vendor Advisory
https://support.eset.com/en/ca7794-local-privilege-escalation-vulnerability-fixed-in-eset-products-for-windows Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-26941 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-26941 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://support.eset.com/en/ca7794-local-privilege-escalation-vulnerability-fixed-in-eset-products-for-windows
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Feb. 02, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:P/A:P)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
    Changed Reference Type https://support.eset.com/en/ca7794-local-privilege-escalation-vulnerability-fixed-in-eset-products-for-windows No Types Assigned https://support.eset.com/en/ca7794-local-privilege-escalation-vulnerability-fixed-in-eset-products-for-windows Vendor Advisory
    Added CWE NIST CWE-276
    Added CPE Configuration OR *cpe:2.3:a:eset:endpoint_antivirus:*:*:*:*:*:-:*:* versions up to (including) 7.3 *cpe:2.3:a:eset:endpoint_security:*:*:*:*:*:*:*:* versions up to (including) 7.3 *cpe:2.3:a:eset:file_security:*:*:*:*:*:windows_server:*:* versions up to (including) 7.2 *cpe:2.3:a:eset:internet_security:*:*:*:*:*:*:*:* versions up to (including) 13.2 *cpe:2.3:a:eset:internet_security:1294:*:*:*:*:*:*:* *cpe:2.3:a:eset:mail_security:*:*:*:*:*:domino:*:* versions up to (including) 7.2 *cpe:2.3:a:eset:mail_security:*:*:*:*:*:exchange_server:*:* versions up to (including) 7.2 *cpe:2.3:a:eset:nod32_antivirus:*:*:*:*:business:*:*:* versions up to (including) 7.3 *cpe:2.3:a:eset:nod32_antivirus:*:*:*:*:*:-:*:* versions up to (including) 13.2 *cpe:2.3:a:eset:security:*:*:*:*:*:kerio:*:* versions up to (including) 7.2 *cpe:2.3:a:eset:security:*:*:*:*:*:sharepoint_server:*:* versions up to (including) 7.2 *cpe:2.3:a:eset:smart_security:*:*:*:*:business:*:*:* versions up to (including) 7.3 *cpe:2.3:a:eset:smart_security:*:*:*:*:-:*:*:* versions up to (including) 13.2 *cpe:2.3:a:eset:smart_security:*:*:*:*:premium:*:*:* versions up to (including) 13.2
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-26941 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-26941 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.10264

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability