CVE-2021-39306

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A stack buffer overflow was discovered on Realtek RTL8195AM device before 2.0.10, it exists in the client code when an attacker sends a big size Authentication challenge text in WEP security.

Se ha detectado un desbordamiento del búfer de la pila en el dispositivo Realtek RTL8195AM versiones anteriores a 2.0.10, se presenta en el código del cliente cuando un atacante envía un texto de desafío de autenticación de gran tamaño en la seguridad WEP

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-08-20 CVE Reserved
2021-12-22 CVE Published
2024-08-04 CVE Updated
2024-09-06 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-787: Out-of-bounds Write

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.amebaiot.com/en/security_bulletin/cve-2021-39306	2022-01-04
https://www.realtek.com	2022-01-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Realtek Search vendor "Realtek"	Rtl8195am Firmware Search vendor "Realtek" for product "Rtl8195am Firmware"	< 2.0.10 Search vendor "Realtek" for product "Rtl8195am Firmware" and version " < 2.0.10"	-	Affected	in	Realtek Search vendor "Realtek"	Rtl8195am Search vendor "Realtek" for product "Rtl8195am"	-	-	Safe