// For flags

CVE-2021-32465

Trend Micro Apex One Incorrect Permission Preservation Authentication Bypass Vulnerability

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An incorrect permission preservation vulnerability in Trend Micro Apex One, Apex One as a Service and OfficeScan XG SP1 could allow a remote user to perform an attack and bypass authentication on affected installations. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

Una vulnerabilidad de conservación de permisos incorrecta en Trend Micro Apex One, Apex One as a Service y OfficeScan XG SP1, podría permitir a un usuario remoto llevar a cabo un ataque y omitir la autenticación en las instalaciones afectadas. Nota: un atacante debe obtener primero la habilidad de ejecutar código poco privilegiado en el sistema de destino para poder explotar esta vulnerabilidad

This vulnerability allows remote attackers to bypass authentication on affected installations of Trend Micro Apex One. Authentication as a low-privileged Windows domain user is required to exploit this vulnerability.
The specific flaw exists within the product patching functionality. When applying a patch to the product, the permissions on some files are not properly preserved. An attacker can leverage this vulnerability to bypass authentication on the system.

*Credits: HexKitchen
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-05-07 CVE Reserved
  • 2021-07-30 CVE Published
  • 2024-07-23 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-281: Improper Preservation of Permissions
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Trendmicro
Search vendor "Trendmicro"
 Apex One
Search vendor "Trendmicro" for product "Apex One"
 2019
Search vendor "Trendmicro" for product "Apex One" and version "2019"
-
Affected
Trendmicro
Search vendor "Trendmicro"
 Officescan
Search vendor "Trendmicro" for product "Officescan"
 xg
Search vendor "Trendmicro" for product "Officescan" and version "xg"
sp1
Affected