CVE-2021-20090

KEV
Published: Apr 29, 2021 Last Modified: Nov 03, 2025
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
HIGH 7,5
Source: [email protected]
Access Vector: network
Access Complexity: low
Authentication: none
Confidentiality: partial
Integrity: partial
Availability: partial

Description

AI Translation Available

A path traversal vulnerability in the web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 could allow unauthenticated remote attackers to bypass authentication.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,9440
Percentile
1,0th
Updated

EPSS Score Trend (Last 90 Days)

22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Stable
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Confidentiality Availability
Potential Impacts:
Execute Unauthorized Code Or Commands Modify Files Or Directories Read Files Or Directories Dos: Crash, Exit, Or Restart
Applicable Platforms
Technologies: AI/ML
Likelihood of Exploit: High
View CWE Details
Operating System

Wsr-2533Dhp3-Bk Firmware by Buffalo

Product Information
Vendor Buffalo
Product Wsr-2533Dhp3-Bk Firmware
Version Range Affected
To 1.24 (inclusive)
cpe:2.3:o:buffalo:wsr-2533dhp3-bk_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Wsr-2533Dhpl2-Bk Firmware by Buffalo

Product Information
Vendor Buffalo
Product Wsr-2533Dhpl2-Bk Firmware
Version Range Affected
To 1.02 (inclusive)
cpe:2.3:o:buffalo:wsr-2533dhpl2-bk_firmware:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://www.cisa.gov/known-exploited-vulnerabilities-catalo…
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021…
https://www.kb.cert.org/vuls/id/914124
https://www.kb.cert.org/vuls/id/914124
https://www.secpod.com/blog/arcadyan-based-routers-and-mode…
https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-expl…
https://www.tenable.com/security/research/tra-2021-13
https://www.tenable.com/security/research/tra-2021-13
https://www.kb.cert.org/vuls/id/914124
https://www.kb.cert.org/vuls/id/914124
https://www.secpod.com/blog/arcadyan-based-routers-and-mode…
https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-expl…
https://www.tenable.com/security/research/tra-2021-13
https://www.tenable.com/security/research/tra-2021-13