Acer Connect M6E 5G Portable WiFi Router up to M6E_AI_1.00.000019 MQTT Broker improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.8$0-$5k2.99

Summaryinfo

A vulnerability, which was classified as critical, has been found in Acer Connect M6E 5G Portable WiFi Router up to M6E_AI_1.00.000019. The impacted element is an unknown function of the component MQTT Broker. The manipulation leads to improper authentication. This vulnerability is listed as CVE-2026-49186. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Acer Connect M6E 5G Portable WiFi Router up to M6E_AI_1.00.000019. It has been rated as very critical. This issue affects an unknown functionality of the component MQTT Broker. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The local MQTT broker does not enforce topic-level Access Control Lists (ACLs). This allows any client to subscribe using wildcard characters (# or +) to enumerate hidden network devices or publish rogue control commands.

The weakness was presented by Ta-Lun Yen. It is possible to read the advisory at community.acer.com. The identification of this vulnerability is CVE-2026-49186 since 05/28/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/04/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-34200). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.8

VulDB Base Score: 9.8
VulDB Temp Score: 9.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/28/2026 CVE reserved
06/04/2026 +7 days Advisory disclosed
06/04/2026 +0 days VulDB entry created
06/04/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: community.acer.com
Researcher: Ta-Lun Yen
Status: Confirmed

CVE: CVE-2026-49186 (🔒)
GCVE (CVE): GCVE-0-2026-49186
GCVE (VulDB): GCVE-100-368243
EUVD: 🔒

Entryinfo

Created: 06/04/2026 06:28
Updated: 06/04/2026 08:23
Changes: 06/04/2026 06:28 (67), 06/04/2026 08:23 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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