CVE-2020-27888

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered on Ubiquiti UniFi Meshing Access Point UAP-AC-M 4.3.21.11325 and UniFi Controller 6.0.28 devices. Cached credentials are not erased from an access point returning wirelessly from a disconnected state. This may provide unintended network access.

Se detectó un problema en los dispositivos Ubiquiti UniFi Meshing Access Point UAP-AC-M versión 4.3.21.11325 y UniFi Controller versión 6.0.28. Las credenciales almacenadas en caché no son borradas de un punto de acceso que retorna de forma inalámbrica desde un estado desconectado. Esto puede proporcionar acceso a la red no deseado

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-27 CVE Reserved
2020-10-27 CVE Published
2023-07-13 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-459: Incomplete Cleanup
CWE-522: Insufficiently Protected Credentials

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://community.ui.com/questions/Possible-authentication-bypass-for-access-into-LAN/7965adb2-5d70-4410-8467-4c7bec76bc00	2021-07-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Ui Search vendor "Ui"	Unifi Meshing Access Point Firmware Search vendor "Ui" for product "Unifi Meshing Access Point Firmware"	4.3.21.11325 Search vendor "Ui" for product "Unifi Meshing Access Point Firmware" and version "4.3.21.11325"	-	Affected	in	Ui Search vendor "Ui"	Unifi Meshing Access Point Search vendor "Ui" for product "Unifi Meshing Access Point"	-	-	Safe
Ui Search vendor "Ui"	Unifi Controller Firmware Search vendor "Ui" for product "Unifi Controller Firmware"	6.0.28 Search vendor "Ui" for product "Unifi Controller Firmware" and version "6.0.28"	-	Affected	in	Ui Search vendor "Ui"	Unifi Controller Search vendor "Ui" for product "Unifi Controller"	-	-	Safe