Mitsubishi Electric Room Air Conditioners MSZ-BKR2223-W Setting hard-coded credentials

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3$0-$5k0.84

Summaryinfo

A vulnerability categorized as critical has been discovered in Mitsubishi Electric Room Air Conditioners MSZ-BKR2223-W, Room Air Conditioners MSZ-BKR2224-W, Room Air Conditioners MSZ-BKR2523-W, Room Air Conditioners MSZ-BKR2524-W, Room Air Conditioners MSZ-BKR2823-W, Room Air Conditioners MSZ-BKR2824-W, Room Air Conditioners MSZ-BKR3623-W, Room Air Conditioners MSZ-BKR3624-W, Room Air Conditioners MSZ-BKR4023S-W, Room Air Conditioners MSZ-BKR4024S-W, Room Air Conditioners MSZ-BKR5623S-W, Room Air Conditioners MSZ-BKR5624S-W, Room Air Conditioners MSZ-BKR6323S-W, Room Air Conditioners MSZ-BKR6324S-W, Room Air Conditioners MSZ-BKR7123S-W, Room Air Conditioners MSZ-BKR7124S-W, Room Air Conditioners MSZ-BXV2223-W, Room Air Conditioners MSZ-BXV2224-W, Room Air Conditioners MSZ-BXV2225-W, Room Air Conditioners MSZ-BXV2226-W, Room Air Conditioners MSZ-BXV2523-W, Room Air Conditioners MSZ-BXV2524-W, Room Air Conditioners MSZ-BXV2525-W, Room Air Conditioners MSZ-BXV2526-W, Room Air Conditioners MSZ-BXV2823-W, Room Air Conditioners MSZ-BXV2824-W, Room Air Conditioners MSZ-BXV2825-W, Room Air Conditioners MSZ-BXV2826-W, Room Air Conditioners MSZ-BXV3623-W, Room Air Conditioners MSZ-BXV3624-W, Room Air Conditioners MSZ-BXV3625-W, Room Air Conditioners MSZ-BXV3626-W, Room Air Conditioners MSZ-BXV4023S-W, Room Air Conditioners MSZ-BXV4024S-W, Room Air Conditioners MSZ-BXV4025S-W, Room Air Conditioners MSZ-BXV4026S-W, Room Air Conditioners MSZ-BXV5623S-W, Room Air Conditioners MSZ-BXV5624S-W, Room Air Conditioners MSZ-BXV5625S-W, Room Air Conditioners MSZ-BXV5626S-W, Room Air Conditioners MSZ-BXV6323S-W, Room Air Conditioners MSZ-BXV6324S-W, Room Air Conditioners MSZ-BXV6325S-W, Room Air Conditioners MSZ-BXV6326S-W, Room Air Conditioners MSZ-BXV7123S-W, Room Air Conditioners MSZ-BXV7124S-W, Room Air Conditioners MSZ-BXV7125S-W, Room Air Conditioners MSZ-BXV7126S-W, Room Air Conditioners MSZ-EM2220E8-W, Room Air Conditioners MSZ-EM2221E9-W, Room Air Conditioners MSZ-EM2221E9-W-1, Room Air Conditioners MSZ-EM2222E1-W, Room Air Conditioners MSZ-EM2222E1-W-1, Room Air Conditioners MSZ-EM2222E1-W-2, Room Air Conditioners MSZ-EM2223E3-W, Room Air Conditioners MSZ-EM2224E4-W, Room Air Conditioners MSZ-EM2225E5-W, Room Air Conditioners MSZ-EM2226E6-W, Room Air Conditioners MSZ-EM2520E8-W, Room Air Conditioners MSZ-EM2521E9-W, Room Air Conditioners MSZ-EM2521E9-W-1, Room Air Conditioners MSZ-EM2522E1-W, Room Air Conditioners MSZ-EM2522E1-W-1, Room Air Conditioners MSZ-EM2522E1-W-2, Room Air Conditioners MSZ-EM2523E3-W, Room Air Conditioners MSZ-EM2524E4-W, Room Air Conditioners MSZ-EM2525E5-W and Room Air Conditioners MSZ-EM2526E. Affected by this vulnerability is an unknown functionality of the component Setting Handler. Executing a manipulation can lead to hard-coded credentials. This vulnerability is tracked as CVE-2026-5667. The attack is only possible within the local network. No exploit exists.

Detailsinfo

A vulnerability was found in Mitsubishi Electric Room Air Conditioners MSZ-BKR2223-W, Room Air Conditioners MSZ-BKR2224-W, Room Air Conditioners MSZ-BKR2523-W, Room Air Conditioners MSZ-BKR2524-W, Room Air Conditioners MSZ-BKR2823-W, Room Air Conditioners MSZ-BKR2824-W, Room Air Conditioners MSZ-BKR3623-W, Room Air Conditioners MSZ-BKR3624-W, Room Air Conditioners MSZ-BKR4023S-W, Room Air Conditioners MSZ-BKR4024S-W, Room Air Conditioners MSZ-BKR5623S-W, Room Air Conditioners MSZ-BKR5624S-W, Room Air Conditioners MSZ-BKR6323S-W, Room Air Conditioners MSZ-BKR6324S-W, Room Air Conditioners MSZ-BKR7123S-W, Room Air Conditioners MSZ-BKR7124S-W, Room Air Conditioners MSZ-BXV2223-W, Room Air Conditioners MSZ-BXV2224-W, Room Air Conditioners MSZ-BXV2225-W, Room Air Conditioners MSZ-BXV2226-W, Room Air Conditioners MSZ-BXV2523-W, Room Air Conditioners MSZ-BXV2524-W, Room Air Conditioners MSZ-BXV2525-W, Room Air Conditioners MSZ-BXV2526-W, Room Air Conditioners MSZ-BXV2823-W, Room Air Conditioners MSZ-BXV2824-W, Room Air Conditioners MSZ-BXV2825-W, Room Air Conditioners MSZ-BXV2826-W, Room Air Conditioners MSZ-BXV3623-W, Room Air Conditioners MSZ-BXV3624-W, Room Air Conditioners MSZ-BXV3625-W, Room Air Conditioners MSZ-BXV3626-W, Room Air Conditioners MSZ-BXV4023S-W, Room Air Conditioners MSZ-BXV4024S-W, Room Air Conditioners MSZ-BXV4025S-W, Room Air Conditioners MSZ-BXV4026S-W, Room Air Conditioners MSZ-BXV5623S-W, Room Air Conditioners MSZ-BXV5624S-W, Room Air Conditioners MSZ-BXV5625S-W, Room Air Conditioners MSZ-BXV5626S-W, Room Air Conditioners MSZ-BXV6323S-W, Room Air Conditioners MSZ-BXV6324S-W, Room Air Conditioners MSZ-BXV6325S-W, Room Air Conditioners MSZ-BXV6326S-W, Room Air Conditioners MSZ-BXV7123S-W, Room Air Conditioners MSZ-BXV7124S-W, Room Air Conditioners MSZ-BXV7125S-W, Room Air Conditioners MSZ-BXV7126S-W, Room Air Conditioners MSZ-EM2220E8-W, Room Air Conditioners MSZ-EM2221E9-W, Room Air Conditioners MSZ-EM2221E9-W-1, Room Air Conditioners MSZ-EM2222E1-W, Room Air Conditioners MSZ-EM2222E1-W-1, Room Air Conditioners MSZ-EM2222E1-W-2, Room Air Conditioners MSZ-EM2223E3-W, Room Air Conditioners MSZ-EM2224E4-W, Room Air Conditioners MSZ-EM2225E5-W, Room Air Conditioners MSZ-EM2226E6-W, Room Air Conditioners MSZ-EM2520E8-W, Room Air Conditioners MSZ-EM2521E9-W, Room Air Conditioners MSZ-EM2521E9-W-1, Room Air Conditioners MSZ-EM2522E1-W, Room Air Conditioners MSZ-EM2522E1-W-1, Room Air Conditioners MSZ-EM2522E1-W-2, Room Air Conditioners MSZ-EM2523E3-W, Room Air Conditioners MSZ-EM2524E4-W, Room Air Conditioners MSZ-EM2525E5-W and Room Air Conditioners MSZ-EM2526E. It has been declared as critical. This vulnerability affects an unknown functionality of the component Setting Handler. The manipulation with an unknown input leads to a hard-coded credentials vulnerability. The CWE definition for the vulnerability is CWE-798. The product contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Use of Hard-coded Credentials vulnerability in Mitsubishi Electric Room Air Conditioners (for Japan and outside Japan); Wireless LAN Adapters for Room Air Conditioners (for Japan and outside Japan); Wireless LAN Adapters for Packaged Air Conditioners (for Japan and outside Japan); Refrigerators (for Japan); Heat Pump Water Heaters / HEMS-Compatible Adapters / Wireless LAN Adapters (for Japan); Bathroom Dryer / Heater / Ventilation Systems (for Japan); Adapters for Airflow Ventilation Systems, Heat Pump Chilled / Hot Water Systems, and Ventilation / Air-Conditioning System Air Resorts (for Japan); Lossnay Central Ventilation Systems (for Japan); Smart Switches for Ventilation Fans and Lossnay (for Japan); IH Cooking Heaters (for Japan); and Rice Cookers (for Japan) allows an attacker within Wi-Fi radio range of an affected product to access the affected product using a hard-coded SSID and password, thereby obtaining device data such as operation status, room set temperature, and room temperature; changing the air-conditioner or Wi-Fi settings; or causing Wi-Fi communication to enter a denial-of-service (DoS) condition.

The advisory is shared for download at mitsubishielectric.com. This vulnerability was named CVE-2026-5667 since 04/06/2026. The exploitation appears to be easy. The attack can only be done within the local network. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 06/18/2026). The MITRE ATT&CK project declares the attack technique as T1110.001.

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-2026-37646). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

License

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: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
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: Hard-coded credentials
CWE: CWE-798 / CWE-259 / CWE-255
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

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

04/06/2026 CVE reserved
06/17/2026 +72 days Advisory disclosed
06/17/2026 +0 days VulDB entry created
06/18/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: mitsubishielectric.com
Status: Confirmed

CVE: CVE-2026-5667 (🔒)
GCVE (CVE): GCVE-0-2026-5667
GCVE (VulDB): GCVE-100-371932
EUVD: 🔒

Entryinfo

Created: 06/17/2026 14:13
Updated: 06/18/2026 00:14
Changes: 06/17/2026 14:13 (64), 06/18/2026 00:14 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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