CVE-2021-20156
MEDIUM
6,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: high
Availability: none
MEDIUM
4,0
Source: [email protected]
Access Vector: network
Access Complexity: low
Authentication: single
Confidentiality: none
Integrity: partial
Availability: none
Description
AI Translation Available
Trendnet AC2600 TEW-827DRU version 2.08B01 contains an improper access control configuration that could allow for a malicious firmware update. It is possible to manually install firmware that may be malicious in nature as there does not appear to be any signature validation done to determine if it is from a known and trusted source. This includes firmware updates that are done via the automated 'check for updates' in the admin interface. If an attacker is able to masquerade as the update server, the device will not verify that the firmware updates downloaded are legitimate.
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
0,0010
Percentile
0,3th
Updated
EPSS Score Trend (Last 90 Days)
347
Improper Verification of Cryptographic Signature
DraftCommon Consequences
Security Scopes Affected:
Access Control
Integrity
Confidentiality
Potential Impacts:
Gain Privileges Or Assume Identity
Modify Application Data
Execute Unauthorized Code Or Commands
Applicable Platforms
All platforms may be affected
Operating System
Tew-827Dru Firmware by Trendnet
CPE Identifier
View Detailed Analysis
cpe:2.3:o:trendnet:tew-827dru_firmware:2.08b01:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://www.tenable.com/security/research/tra-2021-54
https://www.tenable.com/security/research/tra-2021-54