CVE-2020-26941

published 2021-01-26

CVE-2020-26941: 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…

Priority P4 27 medium 5.5 CVSS 3.1

AV L AC L PR L UI N S U C N I H A N

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.

Affected

11 ranges

Vendor	Product	Version range	Fixed in
eset	endpoint_antivirus	<= 7.3	—
eset	endpoint_security	<= 7.3	—
eset	file_security	<= 7.2	—
eset	internet_security	<= 13.2	—
eset	internet_security	—	—
eset	mail_security	<= 7.2	—
eset	nod32_antivirus	<= 7.3	—
eset	nod32_antivirus	<= 13.2	—
eset	security	<= 7.2	—
eset	smart_security	<= 7.3	—
eset	smart_security	<= 13.2	—

CVSS provenance

nvd v3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

nvd v2.0 3.6 LOW AV:L/AC:L/Au:N/C:N/I:P/A:P

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-276