CVE-2021-20165

Severity Score

8.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Trendnet AC2600 TEW-827DRU version 2.08B01 does not properly implement csrf protections. Most pages lack proper usage of CSRF protections or mitigations. Additionally, pages that do make use of CSRF tokens are trivially bypassable as the server does not appear to validate them properly (i.e. re-using an old token or finding the token thru some other method is possible).

Trendnet AC2600 TEW-827DRU versión 2.08B01, no implementa correctamente las protecciones csrf. La mayoría de las páginas carecen de un uso adecuado de las protecciones o mitigaciones de CSRF. Además, las páginas que hacen uso de tokens CSRF son trivialmente evitables ya que el servidor no parece comprobarlos apropiadamente (es decir, es posible reusar un token antiguo o encontrar el token a través de algún otro método).

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-17 CVE Reserved
2021-12-30 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2024-09-14 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-352: Cross-Site Request Forgery (CSRF)

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://www.tenable.com/security/research/tra-2021-54	2024-08-03

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Trendnet Search vendor "Trendnet"	Tew-827dru Firmware Search vendor "Trendnet" for product "Tew-827dru Firmware"	2.08b01 Search vendor "Trendnet" for product "Tew-827dru Firmware" and version "2.08b01"	-	Affected	in	Trendnet Search vendor "Trendnet"	Tew-827dru Search vendor "Trendnet" for product "Tew-827dru"	2.0 Search vendor "Trendnet" for product "Tew-827dru" and version "2.0"	-	Safe