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 rated as critical. Affected is an unknown function of the component Setting Handler. Performing a manipulation results in hard-coded credentials.
This vulnerability is identified as CVE-2026-5667. The attack can only be performed from the local network. There is not any exploit available.
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CVE-2026-5667 | Mitsubishi Electric Room Air Conditioners MSZ-BKR2223-W Setting hard-coded credentials (EUVD-2026-37646)
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…
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IoC Intelligence (1 Indikatoren)
CVE-2026-5667
IR-PLAYBOOK-VULN-REMEDIATION
MEDIUMSOC Incident Playbook: Vulnerability Remediation & Verification
1-Click Detection Engineering: Sigma & YARA Rules
SOC Readytitle: Detect Exploitation - CVE-2026-5667 | Mitsubishi Electric Room Air Conditioners MSZ-BKR2223-W Setting hard-coded credentials (EUVD-2026-37646)
id: 103d7f41-a422-4edd-a097-c8c37d598e15
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
- https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-24
logsource:
category: network_connection
product: any
detection:
selection:
CommandLine|contains:
- 'exploit'
condition: selection
falsepositives:
- Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
- attack.initial_accessrule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-24"
description = "YARA Signature for "
strings:
$str = "CVE-2026-5667 | Mitsubishi Ele" ascii wide
condition:
any of them
}
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